Ford Explorer Setting Multiple Output Circuit Codes - New PCM (Part 2)

[@djosbun]

I love how you ended this video, Paul, with how you included information that was posted to the previous video. The Scanner Danner community is full of awesome people!

[@ScannerDanner]

It absolutely is! I learn from you guys too.

[@JoesAutoElectric]

I think it is great that you release these videos. It shows people that this work is not only difficult to start with, but it can evolve into disaster because of faulty new parts. Those who think you are "chasing your tail" should care nearly as much as you do about fixing the vehicle properly. Those are the guys firing the parts canon talking shit. Ignore them.

[@ScannerDanner]

Thank you Joe. The other variable here is that most other repair channels do not film live. They've already done their homework before turning the camera on, so it gives people a false sense of things at times.

[@JoesAutoElectric]

@@ScannerDanner yes, I always tried to do videos as I was going along, but not always possible with the daily ringing if phones, or people are walking in, etc...

[@ScannerDanner]

@@JoesAutoElectric i should have clarified. That method is NOT a problem at all! In fact, at times its better. It gets to the point much, much faster and can be more useful for the guys in a pinch. It just bring a false sense of reality to the silver bullet seekers out there. That's all I meant.

[@mohawkmike142]

@@ScannerDanner True Danner but your video's are a security blanket for the masses of us out here not at your level. To see top line guys run into these insane parts issues while keeping their wits about them offers hope for some of us. It's why we watch in the first place. It's not cool to get kicked in the nuts by a machine as it's bad enough dealing with the dickheads we meet in life. You, Joe, Eric O , Ivan and a host of others just keep it coming. It's so valuable/ thx.

[@ScannerDanner]

@@mohawkmike142 thank you!

[@lanwickum]

I love how Danner can walk up think it all through, talk it through. Then walk away to another car like nothing. I have trouble switching my mind that easily.

[@automotivated5934]

Every shop manager/tech needs to have some juggling skills like that. Haha

[@AlAmantea]

As a previous tech who worked for several Ford dealers as an electronics and driveability specialist, you actually have a smoking gun here that you were overlooking. The scan tool was showing 0 amps of current from the o2 sensors (all 4). Ford uses current measurement to verify circuit integrity and part validity, as well as a comparator voltage measurement. The voltage is used to test wiring integrity, and the current is used to test the circuit operation. This all happens during both KOEO, and KOER tests, and at vehicle startup. This current measurement is separate for the different supply voltage circuits, which explains the commonality between codes for everything on the one fuse. With that current measurement capability disabled inside the PCM, the PCM cannot detect the circuit integrity as valid because it's looking for a current draw at the time of it's internal test during KOEO. Since it doesn't see current, it assumes a defective circuit, and sets the code. It also explains why you could not substitute the load to remove the code. The pcm never saw any current draw on those circuits, so it will always fail the circuit! You most definitely have a defective PCM, but most remanufacturers including FoMoCo, only test inputs and outputs for valid operation. They do not verify current comparison during a reman, so it isn't surprising that it was missed. I'm sure that pcm hit the reman desk, got tested, passed, and was relabeled and recycled as a functional pcm, reboxed and then readied for shipment. It just so happened that "David" was the next in line calling for that pcm, as the reman desk would not have known where it originated from, only that it was labeled as complete and ready to ship. Therefore, David got that same pcm back. If that pcm were to return to the remanufacturer at any point, the same thing will happen again, because of the limited way in which they test and verify core pcm's. That pcm needs to die a quick and violent death in a crusher, or a slow burn in a furnace... Order from a different remanufacturer, or try to find a junkyard solution, or possibly a new pcm if available (probably not)

[@brianb5779]

Good info Al, thanks

[@ScannerDanner]

Absolutely 100% spot on my friend. Thank you

[@GarySmith-ip1pc]

you could also send it to a specialist with a description of the issues along with codes for root cause diagnosis and if (good) parts available; a repair to ECM.

[@mohawkmike142]

Replying to Al here but my question is to anybody out there that may know....Is there anywhere an independent out there that can repair original equipment ECM PCM and other faulty modules? The idea that techs like Danner and other top line guys that know their shit have to do a 3,4, 5 Module parts bomb to get a good one is pure insanity. The glitches in modern stuff is just beyond the pale..

[@AlAmantea]

@@mohawkmike142 The largest issue here is that all ECM's and modules are proprietary, and as such, the internal schematics and parts diagrams are normally not released to 3rd party repair facilities. Sometimes, after End Of Life, they are made available, but for the most part, this is not so. This means that most 3rd party repair facilities are unable to provide 100% functionality testing, or internal eeprom replacement. Basic components such as capacitors, resisters, mosfets, inductors, and the like are fairly easy to trace down and replace with like components, but the logic is where most get tripped up. Most facilities will bench test a module, make certain it is providing it's fundamental operation, and release it out the door if no errors are detected. These are mostly "module mills", and they are hesitant to dive any deeper than normal on modules because there isn't any profit in it for them. All that to say basically, if they can't make money at it, they won't do it, even if they can.

[@cullenmiller8170]

The parts situation is getting bad for sure. I hate when you do your tests and things keep changing and making you doubt yourself. Great teaching and showing all the different tests.

[@ScannerDanner]

For sure!

[@robertschwarz1568]

Scanner Danner- ,"count it all joy when you fall into various trials, knowing that the testing of your faith produces patience. But let patience have its perfect work, that you may be perfect and complete, lacking nothing!" James 1:4 Brother keep up the good work! We all chase our tails sometimes, especially when new parts fail and we second guess ourselves.

[@junkpile4106]

Im glad you posted this video. Reality of auto repair.

[@luigigonzalez5062]

Just seating to have a cup of coffee and BOOM! New scannerDanner video is up. 👍👍👍

[@ScannerDanner]

Thank you Luigi!

[@jocrp6]

I have 2008 explorer doing the same exact thing, Thats why i'm here, Thanks Dan!

[@ScannerDanner]

It's Paul Danner 😉 Good providence to you my friend. Hope you find a good PCM. This one took 4 or 5 to get a good one.

[@briancuff5607]

We're did you finally get a good pcm I have the same thing on our 08

[@briancuff5607]

​@ScannerDanner were did you find your good pcm have the same issue and your diagnosis helped alot thanks

[@mph5896]

I don't replace a ton of PCM's, but have done maybe a dozen in the past 10 or so years. Out of all the "remans", I only remember getting 1 good one. Then it turns into an argument with the reman company to get a "good" one. I researched REALLY reputable companies and found a particular reman place that came highly recommended. I paid up, like x3 the cost of other places. Worked great (cant remember the name though). I just go with used for the most part now, flash them and haven't had an issue.

[@the2gooners]

Thanks for u effort to show the way u guys called for faulty pcm, had this same exactly problem today with 2009 explorer sames codes, and after some testing I was able to call a faulty pcm as well. Thanks to you and your work team.

[@ScannerDanner]

Glad it helped! This one was a tough call but 4 PCMs later and ours was fixed too

[@GeminiSeven43]

One of the the first things I liked about your channel is the battles that you have with some of these cases and its definitely NOT chasing your tail when it comes to troubleshooting and mystery like this. You have to cover all the bases not only to fix the problem but also to prevent an underlying condition from taking out a component down the road. You are truly an inspiration for all the mechanics out there (Like me) that have little time and patience and are frequently stumped by these type of issues. Your customers (and shops that contact you) are lucky to have someone like you and Danner that care enough to do a thorough and complete job each and every time. Thanks so much and I look forward to part 3.

[@automotivated5934]

If someone hasn’t struggled with a diagnosis or “chased their tail” they haven’t done many of them. Lol. That you can take to the bank!

[@ScannerDanner]

Thank you so much my friend

[@ScannerDanner]

Got that right my friend! Thank you

[@automotivated5934]

@@ScannerDanner Absolutely! You seem like a stand up guy and you do more than enough for your subscribers. I’d defend that any day of the week.

[@55azguy]

Getting a defective part makes you go crazy. You’ll spend so much time going thru your diagnosis a second time to make sure your right the first time. Your lucky the customer is Cool about all of this. 👍👍👍👍👍

[@ScannerDanner]

On point, 100%

[@ASEMasterTech909]

The “chase your tail” commenters are upset because they would have gone broke with all the part they would have thrown at it! 4 H02S, MAF, EGR, EVR, new alternator, that would have made them happier. Great approach Paul, love the content!

[@ScannerDanner]

Thank you Oscar

[@shauno3697]

These videos are just what a lot of us need. I don't think you realize how cathartic these videos can be. I never really got to fully develop my diagnostic capabilities while I was still in the field. I have a hand full of cars that outsmarted me a couple years ago and I still occasionally find myself wondering what I did wrong or could have done better. Seeing a video like this makes me think maybe I can kick my own ass just a little less. Thanks for sharing!

[@ScannerDanner]

For sure! Those of us that truly care, tend to beat ourselves up more than we should be. BTW I got your email, thank you! When I have time ill go through it. Really appreciate you Shaun!

[@JimmyMakingitwork]

MAN I'm so glad I'm not alone in spending twice as much time verifying a defective part as I did the original diagnosis. Parts supplier should pay that time. Not to mention the customer is without their vehicles all that time. If the parts can't be made right at $99, do them right and charge $199...or whatever it takes to cut down these issues to near zero. I'd much rather pay more and be done. People are so cheap (suppliers and internet shoppers) it's crushing the industry....aka, us. We usually pay out of our pockets for this stuff in free time. No other industry does that. #endrant

[@ScannerDanner]

You are absolutely correct. The parts industry needs to pay up

[@shauno3697]

@@ScannerDanner I'd rather they stopped building garbage instead. I'm out of the industry now and still can't get away from shit parts and the headaches they cause.

[@shunnedoff-road7116]

I currently have the exact same issue with my daughters car. I have checked and checked and at the point of pulling the harness but have not failures relative to the harness having a short. I have function the EGR percentages and get a response, as well as the purge valve. The O2 sensors are reading and reading lean. The car idles fine then runs rough till it dies. Clear codes and the same one come back every time. Thank for the detailed tests described and the detailed trouble shooting. Excellent video!

[@meorge9359]

Really appreciate this series ! Goes to show how it goes in the real world. Would love to see more and learn more

[@ScannerDanner]

Thank you! Glad you found me and I look forward to hearing from you some more

[@aussiefirestorm]

Thanks for showing all the frustrations Paul. It makes me feel better about shipping a VW after bypassing the entire harness for 2 sensors having them working on scan data and scope , codes gone etc... but still getting a 5v ref circuit code. Paid a diagnostic "expert" $440 to check my work and make a call, he left me with more questions than answers, replace other MAP sensor and or get the ECU tested. OK I says get it checked and reprogram a new one for me, Oh I can't do VW but still pay me my bucks! Kinda leave a sour taste if ya know what I mean :) Anyway thanks again for your teachings , this is the first one in 5ish years that I could not fix thanks to our help I usually come out on top. Cheers to Danner for all the shots!

[@romanosautomotive]

All the extra tests you did were warranted for sure. A little bit more of your time to make sure you're not making a wrong call. Excellent as always 💪

[@rick343]

Been waiting for part 2, great study, my favorites are the ones that give you trouble, get to try and learn more, with the problem of defective"new" parts itt really makes alot of unnecessary problems, I worked at a auto parts store and I saw first hand, brand new parts in bulk that are getting by any quality control, really a shame that this is happening. Makes your job much more difficult. No worries you'll figure it out.

[@irish6976]

I agree about the "secondary" electronic rebuild industry, a lot of sham out there! Sent in the TCM on my Mazda 5 to a place in Florida offering "lifetime warranty". I got the TCM back and it worked flawless for a month, then it went into the dreaded "limit safety mode" locking me into 3rd gear only. Turns out all they had done was reflow the solder at the terminal connections. I sent it back, three weeks later I reinstall the repaired TCM, they had replaced the microprocessor by my visual inspection. However they had loaded the WRONG software on the module, it worked fine in Automatic, but the Manual stick shift mode did NOT work! I gave up and bought a new TCM from Mazda. Lifetime warranty? Well, with the cost of freight that they charged each time, and my labor to remove and replace? It was a no brainer, but a new TCM. The issue we ALL must be concerned about is critical parts like PCMs, TCM, if the OEM does not offer, insures your fine perfect old ride is turned into JUNK! What we really need to do is PROTECT the RIGHT to REPAIR, otherwise shade tree mechanics and independent shops will just disappear!

[@rodrigofloresf.7259]

Calling out a pcm is a really hard thing to do, you really did everything by the book, good call!

[@pinpointauto3091]

Right, got 15 years of diagnosing, and still i remember my lead tech when I was a gs. "If you think it's a pcm it's not"

[@englishrifleman6556]

Good you released this part 1 & 2 . Fantastic diagnostic techniques, and good Logical thinking. Looking forward to Part 3

[@ScannerDanner]

I didn't release it because we didn't have a conclusion and we still don't! I just hope we get that chance and I think we will now. Thanks so much!

[@physics2817]

I went thru this whole odyssey with you guys 😇 Amazing experiences and great direction. After hearing the possibility y’all be throwing PCM’s at the fix, and Ford no longer has QC over the remans…My thought was throw a different engine in there and don’t look back! Blessings 🙏

[@everythingbutkoi6898]

Wow, glad I didn’t have to make the call, well done danner!

[@stephenmoxley3004]

Great video, Danner. It's really sad that the fix for this vehicle comes down to inferior quality parts. What's even more disturbing is finding out that Ford has "sublet" the rebuilding of this part to another company. Looking forward to the next chapter.

[@ScannerDanner]

Learned that from this absolutely awesome community! And it is really bad (the parts situation). Make us doubt ourselves like nothing else when we get a bad part

[@mike-yp1uk]

Awesome video. One thing that always helps is to just catch all the data from every wire of the component at once watch power and ground and signal and get it to act up. Scopes are awesome.

[@jameshollingsworth4714]

Great, logical progress through a difficult situation, with virtually no direct information as to the actions of the ecm outputs and inputs in a known configuration. It is amazing to me, that even a non critical controller from a mid 70s pinball machine, features detailed self diagnostic routines to test all inputs and exercise every output. Further, the anticipated outputs, versus inputs, are explained in the service manual supplied, including the schematic, with each machine. No wonder the ecm repair shop sends them back broke; the techs are in the dark as much as the mechanics. Keep up the good work!

[@altodude890]

I found myself in this boat recently and glad I stumbled across your video . I replaced the EGR and vapor selenoid and was about to do the o2 sensors but I think I will just deal with the CEL . I may take the bulb out of the dash cluster . Doubt I’m going to spend money on a remanufactured PCM just to make the light go out. Explorer is running great so no need . Just don’t want the shop to try to fail my inspection

[@Chicken_JAC]

Helped me in diagnosing bad pcm in 2006 explorer. Had elusive p0433 purge circuit and all O2 heater circuits. I was able to test my pcm and outputs using your how to. Thank you so much. FONZ

[@TheJImbolay]

Had the same problem on a 07 explorer it was the PCM there’s a good article on identity fix

[@234CRTRS]

These are the common Issues of ford Victoria, Grand Marquis, Ford explorer from 2005 to 2010 model. Thanks for this Great Videos.

[@victormihov7855]

I have the exact issue with Ford Explorer 2009 4.0L. codes P0403 and P0443, the ac clutch is working intermitted, when the button Ac is not presed, the ac clutch clicks all the time, the pcm energized the ac relay, the car its very weak power when drive, and the catalytic converter is going very hot when the car is driving continuously, i check everything, powers, ground, egr, purge valve. I wanted a Pcm from FORD but its back order, so i send the pcm to repair on electronic institute (i don't know how its say), and they repair me the pcm and everything is perfect for 150dollar, the car is driving LIKE NEW. I love your videos, i work in Mazda Ford for 15 years:) Greetings from Israel:)

[@ScannerDanner]

Where it all began (Israel) 🙂 Welcome!

[@comporangegt]

Ex ford tech here, current fleet tech. When we had crown vics in the fleet we would get the same codes on the crown vics. They would not set koeo, the codes would set when driving. The first one I diaged with these set of codes I checked all the wiring found no issues. I wound up replacing the PCM and it fixed the fault codes. When ford stopped selling new PCMs I just installed used ones. We have had probably a dozen CV’s with this issue and everyone was fixed with a new/used PCM.

[@shenanigansalv317]

while you guys are waiting for the pcm you should try a used one from the junk yard they are cheap I cant wait for the final video props to you Mr. Danner

[@mph5896]

Going on car-part there is like 10+ different choices based on part number on the old part. I would also at least look to see if a used part is available cheaply.

[@shauno3697]

Probably not. At this point, it's well established that this is a chronic pattern failure part. If you introduce another that's likely to fail somewhere between soon and immediately, you give yourself room to create more self doubt.

[@GarySmith-ip1pc]

@@shauno3697 do you have a part number for this ECM? fancy getting one and having a play with one to see if I can determine root cause of issue

[@shauno3697]

@@GarySmith-ip1pc I've tried to respond to this a few times and it eats the reply. Not sure why. The part number you're looking for should be on your existing PCM. It should include 12a650 as part of the part number.

[@GarySmith-ip1pc]

@@shauno3697 hi Shaun, thanks for replying to post. I'm in UK and was looking for pcm with this issue so I could deep dive it and find root cause of fault and maybe post fix . Regards Gary

[@jameswhite1752]

I know this frustration well, Paul. In my experience, anytime I've encountered this type of problem, the theft code at the bottom of the list, has been the decision maker for me, in calling the ecm as faulty.

[@matthewazzopardi5369]

I've seen soaps with less dramas than this car has given you but well done on the troubleshooting on it legendary that's why I watch your channel because of how pedantic your well done pual

[@ScannerDanner]

Thank you Matthew

[@walterlotz2085]

I'm going through the same issue with a 08 explorer 4.0 . Same burnt wires at EGR and same insulation rotted at MAF SENSOR . Can't wait till your final video

[@ScannerDanner]

This was a faulty ECM and took 4 or 5 different modules before we got a good one. Read through the comments, the pinned one in particular

[@Zachgregor422]

Why I love your channel, Iam a tech in the field and understand the "New Part" frustration. I been following you since pretty much the beginning and I have learned alot from your book and channel and apply it everyday! And want to THANK YOU for the great material , I have not yet run into this problem on particular vehicle and if I ever do come across it I will absolutely remember this awesome information from this video series , looking forward to the follow up! THANK YOU For all the hard work you and Caleb put into this channel 👍

[@ScannerDanner]

Thank you Zach!

[@FOCUS-777]

Thank you Paul for your faithfulness to The Lord by sharing your knowledge with us. My colleagues and I appreciate your thorough teaching and video's. 06 Mercury Mountaineer 4.0 dido, did exactly as your vehicle tech did, changed harness got one from Ford, because of multiple harnes areas with insulation coming apart, (turns out they used soy some how to make the insulation on the harness). Then came exactly the same codes. Had several dealers check the harness part number respect to vehicle Vin etc. It checked out good. Then reset, check all plugs, terminals etc. All good. Then it all came back. PO135, 141,155,161,403,443, 645. Then reset the Kam 7 times simultaneously. checked codes again only 135,155,403,443, and p1000 showed up. Went thru same routine check for power, ground, fuse, and changed pcm power relay output was low, etc. Took it for a spin they all came back. Fellow colleague stated on the inside front right kick panel on a explorer he had found the washer fluid hose going to rear hatch glass was leaking in to the one of the unused terminal plug. I found coolant inside upstream bank 2 O2 terminal, cleaned with water spray bottle then spray brake cleaner for evaporation conected all reset it all However, customer still has the same codes. Is there a possibility that the original harness has a different impedance then the new replacement one which pcm sees. I wonder if mfg. knows about this but they are staying quite about it. Too many people same issue. "For nothing is hidden that will not be disclosed, nor is anything secret that will not become known and come to light." Luke 8:17. Let us not sees asking for wisdom from The Father. It has been a long haul.

[@ScannerDanner]

Faulty "new" ECM my friend. Thank you!

[@asewamu]

Using Snap-On to clear KAM on fords will trigger the theft code and sometimes a no start. They left out the “turn key off after reset” warning. Using IDS it forces you to turn the key off after KAM reset and doesn’t make the PATS mad. Excited to see what you find on this one, I just wanted to mention that in case it’s helpful.

[@ScannerDanner]

That is a super helpful tip! Thanks so much, never knew that. And that was the only time we'd see that code too right? Right after clearing the KAM

[@petecurran3995]

A proper diablo of a job, Paul. You'll nail it dude!

[@jamiegermaine5395]

Still patiently waiting for park 3

[@ScannerDanner]

Don't hold your breath. When I released these, we had already been waiting almost 5 months. Im still waiting too. The other garage is the hold up and parts from what I'm being told

[@fervas]

Any updates on part 3?

[@Victor664.1]

Exelent case, i had a similar experience with an explorer seting vgr and o2 sensors heaters codes , at 200 farenthig it activaded the a/c closh relay , have the pcm repair and no more pronlems.

[@36onyfr9h]

Can you tell me where did you fix it

[@imrickjames98765]

Same issue on my mom’s 2008 Explorer. Throwing all the codes. This is all new to me. Have some general understanding and knowledge. Learning as I go. Really looking like it needs a new PCM then is my conclusion without testing everything. Looking through comments and other forums it seems to be a common issue. Don’t know where to start and what I am going to do. My dad passed away Sep 30th and this was his vehicle. Don’t have a lot of money to just throw at it.

[@ScannerDanner]

Sorry about your dad 😔 Good luck with this repair, as it took us 4 tries to get a good PCM

[@imrickjames98765]

Thank you. I did have to replace the alternator on it and it cleared up a lot of hiccups but didn’t clear the codes. Runs absolutely fine.

[@carlosdominguez424]

Man I was waiting for this "final part" all week. Now I have to wait one more week oh well, but it seems that the 3rd and hopefully final part car will be fixed. Thanks scanner for your videos.

[@ScannerDanner]

I've been waiting 4 months 😉 Did the best I could with what we had. Part 3 is simply going to be a "see, I told you so" lol. So you're not really left hanging. Did you watch long enough to hear me read the comments from others about this system and this issue? I'll get it when I can for you my friend, thank you!

[@carlosdominguez424]

@@ScannerDanner yes I did. My brother had a ford explorer same issue we couldn't fix he sold it for parts. That was 10 years ago... when I saw the 1st video I was excited... now I'm going to know what it was... I can't wait to final part.

[@juanzavala4456]

You are realistic on your videos other channels are not so keep up the good work man i have leard a lot from your videos man thank you

[@ScannerDanner]

We film it the way it is and never try to be super techs who make no mistakes. Thanks for the comment!

[@Tech-28]

This is such an awesome video and what a roller coaster! Keep up the awesome work

[@smms5056]

Thanks Scanner Danner and Danner and Caleb and all others I left out. Grateful 🙏 for the share, it's very real and helpful. God Bless 🙌 🙏

[@chrywelch]

Dang, this makes me feel better about my fiesta fight. Awesome videos and teaching

[@martinsmartinsautobodyandr6740]

It’s a Ford thing no body understands. I can’t get rid of Ford trucks coming in for diag and repairs. But thanks to you I’m able to do the repairs

[@billyyoder8171]

Thank you three Danners. Down side to this reman industry, most of them don't have a way to properly bench test these to guarantee their work. They want to keep costs down for themselves. But make the technician waste more time second guessing themselves. They should be held accountable. But, will they ever be? Probably not. Only going to be worse unless shops ban together in class action and force them to change or close their doors. We need a reman company that guarantees they fully bench test modules and provide some type of health report for each input and output circuit.

[@ServiceInstaller]

Definitely a tough issue that the reman process is so shoddy. However, if you have this diagnosed and handled at the dealership, they should be warrantying the part and labor. So, if within 2 years or however long the warranty is the reman PCM goes bad again, they should be replacing it and the warranty should restart. Sucks for independent shops but when it comes to these issues the keys are typically programmed at the dealership so that's where you'll be anyway. Yes, big waste of time till you get one that works properly.

[@weshawkins7165]

I know you were frustrated but what a fantastic topic for a video. Excellent video. When I watched you trying to tighten those pins I was cringing thinking you were going to stab your finger because I had the same problem the other day with a connector on a vent valve solenoid and almost stabbed myself.

[@mike-yp1uk]

Chasing tail wow. That's gratitude for all the time and effort put in by Paul to help us learn how to get ahead. Keep your BS comments to yourself plz.

[@AK-Ram-tech]

What about a fuse buddy amp meter on the fuse for the circuit? That would give you a rough idea of what the amperage is going through that circuit if it shows the o2 heaters are on. Even if the scan tool doesnt show current flow you would see it on an amp meter at the fuse right?

[@ScannerDanner]

Yes sir, amperage could have been verified at the fuse itself.

[@richardjohn5216]

he did amp test with probe,and did have current ,but problem was ,software not see it ,so circuit is flagged for not being on,when software corupt,it makes decisions ,and there are wrong ,like virus on a pc,pc itself ,hard ware is fine ,software is corrupt ,not work right ,freeze,crash ,do strange stuff,had diesel pump with ecu on top,psg16 vauxhall pump,board and transisters cooked,engine start,but no tick over and no rev counter,outputs to dash ,gone,can drive verhicle,but half the systems dead,had to fit a new pump,use carprog,to pull imob code out,carpass code,then opcom,to devorce it ,go to virgin state,then opcom to marry it to verhicle,with cars imob code,then all was good,and change millage,and vin number ,so correct ,got love faulty ecu ,vauxhall love to put them on the engine too,heat and vibration,with what i have learned of mr scanner videos,i have made leaps and bounds now,i get the hard cars now to fix lol,and my scope on a rope and verus ,is first set tools out of the box ,scope her ,god bless mr scanner,he doing good work,pass on the skills ,world wide ,i am in england ,they call me mr scanner now too,in the work shop,as a lot of the techs ,scared or dont understand what the scope can do,and basic circuit design ,so find whats missing ,love crank no start now ,i have even bought some cheap cars ,as not start ,and got them fixed,resale ,make few dollars ,my friend does hgv ,lorrys,and he loves canbus and linbus problems ,to see the cab tilt and the engine loom ,like a crashed ufo,alien tech ,but he loves it ,volvo,scania,renault,he loves trucks,understands them ,how they work,loves going on breakdowns

[@codyarizona4925]

Excellent job as far as I'm concerned. I'm much on par with the testing procedures you carried out, I would have made the same call after directly putting 12v to the control feed at the pcm. I've seen that same code befor on a Ford taurus, only it was the fuse that kept blowing from a bad diode at the ac compressor. I feel this diagnosis is alot more on the" experienced" level. In my experience with bad pcms, I have seen the computer throw high circuit codes for components that where new an had good power and grounds, the pcm just didnt see the control feed voltages. I also had a dodge stratus that would throw Keep alive codes, the car would run fine but none of the monitors would ever complete. Always hard to call a pcm, but in this case I definitely agree with you. Thanks for posting!

[@AK-Ram-tech]

Also with the pcm issue, i always mark the computer when i send them out with a mark only i would recognize. I havent got the same unit back yet but it is always possible. I have had the happen with other components. I actually bought an alternator at napa once that turned out to be a core someone else turned in. Had to take it back for a new one.

[@toms66gtstang]

Another great video. We have this same problem, at our shop, right now. 2010 Explorer. Everything seems to work correct except this. One test, In the alldata workflow, is to test 2 pins on the bottom ECU connector, 69 grn/brn & 70 gry/violet. They should have batt voltage, but there is nothing there. This is why we don't want to call the ECU. I Don't think we looked at the no current flow, so we'll do that on Monday. The ex Ford tech, in the replies here, made a good point about the no current causing the ECU to throw codes. Still not sure why no volts at those 2 pins??? Thanks for all your great teaching vids!

[@ScannerDanner]

Bad PCMs right out of the box is the norm on these! Took us 4 or 5 to get a good one.

[@Joetechlincolns]

Text from a post in a tech forum: 2010 explorer throws p0443 and p0403. Originally the pcm was not grounding the purge valve or egr. Ford pcm not available got an aftermarket one and everything worked but randomly throws the same dtcs. Again double checked my diagnosis load tested all the circuits and even overlaid the wires, everything points to a bad pcm. Got another one (with dirty looks from parts) this one the purge valve works but the egr does not, sometimes will open the egr valve 10-30 seconds after commanded AND throws dtcs for all the oxygen sensors. Decided to man up and access splice 100 (a bear to get to) splice is good and again verified no chaffing anywhere. Contacted hotline and they said “ it may take multiple pcms to repair this concern” going on number 3 now. I have two pcms I just swapped back and forth and they act up differently. Talk about second guessing your diagnosis I’ve almost never had a pcm fix anything and I never replace them because it’s like a one in 100 chance. But 3 bad in a row??

[@Joetechlincolns]

His follow up: Update - 4 reman PCMs later from Auto ECM and it’s fixed!

[@Joetechlincolns]

The wire insulation breakdown is notorious on these. The harness might still be available through Ford.

[@isalmankhan1]

Awesome👍 Love the diag process we learned from you SD, really really helpful & decisive👍 Thanks for sharing SD, looking forward to part 3😍 Special Thanks to James & Caleb Danner👍 Stay Safe Guy's❤

[@joehomanick]

I just junked 2 of those trucks !! I didn’t realize the computers were in need like that . I just left 2 of them go to the crusher 😵‍💫 .

[@DirtyWorm12]

Glad to see we are on the same page, "new" pcm is faulty. Sounds like they rebuilt his old module and missed the problem when they rebuilt it. Im having a similar issue with a Front electronic module on a 05 thunderbird, no headlights and no driver door window function. Cant get a new computer sent it out to be rebuilt and comes back with same problems 😒.

[@nm-qt2hb]

There are a few 4.0 Explorer PCMs that are unique. Check the PCM box code? We had one a few years back that became a pain in the butt. Ford back ordered it forever. We got two " remanufactured" units and still has codes. In the end we found a very expensive used PCM and we reflashed it. We could not find any company willing to repair the original PCM.

[@ohboy2118]

What about you doing a collaboration with either Mark Salazar Diagnostics or L1 Automotive Training as they both go down to board level module repairs especially given you are looking at reman units from godknows where anyway. Could be interesting?

[@armondoborjas4362]

So Dan. Saw the frustration been there. Same codes. It's the wiring at MAF harness & EGR harness wires were touching intermittently blue 15a fuse you will get 🤪 crazy searching spent time & 💵 l finely found the problem

[@tedhartman8049]

Still no part 3? Did the PCM fix this? My sons 08 Explorer is having this exact issue. I kept thinking it was harness issue because that green wire coming off fuse 42 all go to a splice "S100" behind the intake. Any update on this?

[@ScannerDanner]

Read my pinned comment!

[@tedhartman8049]

where do click to see your pinned comment? Sorry if its obvious @@ScannerDanner

[@ScannerDanner]

@@tedhartman8049 the first comment in the list. Anyway, it took 7 months to get an update from the original garage and yes, it was another bad PCM. Read through the comments and see how common this is on this model. I believe this one got 4 or 5 PCMs before we got a good one.

[@tedhartman8049]

Yes I watched both part 1 and 2 and your commentary at the end of part 2. Was glad to find you did a case study on the exact problems I just happen to be having But when I do the key on engine off self test on his it comes back clean where as almost every time you ran it they all would come back, He drives it around for a day and sometimes I get half the codes back other times all of them. I ordered a used PCM off ebay 4 days ago. Thanks for replying and sharing your knowledge.@@ScannerDanner

[@georgebonney90]

Thank you Mr Danner I appreciate all the hard work to educate us,God Bless❤

[@cyberslacker5150]

The lesson here is WATCH OUT WHERE YOU GET YOUR REPLACEMENT PCMs. Reman PCMs were faulty once and so sometimes they don't fix the issue with them when they resell them. They just paint them and send them on our way. Because most of the Reman PCMs are usually faulty, I like to get mine USED, from a junkyard, preferably from a wrecked car. If the car was wrecked, it means that it was running good. If not I usually choose a good re builder. I've had little problems from Flagship one. The dealer PCM,s are usually not fixed right.

[@shipvx1]

Just found your site, Ill binge watch everything. I have to know is their a part three on the explorer I have all the exact same issues. was it the PCM? All you guys are awsome.

[@ScannerDanner]

No part 3 unfortunately. Waited 8 months to get another PCM and that was the fix. I think this one went through 4 or 5 to get a good one. Read the pinned comment! Thank you!

[@waqasazmat81]

Put a Razor scooter PCM in a ford that will take care of it! Thanks for taking time out and showing us how to test circuits with different methods and I hope grand daughter is doing well.

[@ScannerDanner]

She is! Thank you so much

[@dro2204]

We had a 2010ish Jeep Wrangler… had a manufacturer specific misfire/ fuel injector code. Turned out to be a bad driver, we put a new ecm in… then got a P0300… didn’t have it before… chased that down to be a bad “new” ecm…. Got a another new one…. Got shorted O2 heater codes.. brand new codes. Didn’t bother diagnosing it, sent the ecm back and got ANOTHER NEW one… finally got a good one. Took three tries… just dumb

[@alanw5879]

What about a wiring issue where a corroded wire "somewhere" is only acting up extremely intermittently, ie a ground/pin thats only doing something due to temp/corrosion. We're coming into spring warmer weather now..? idk

[@ScannerDanner]

Covered all of that my friend

[@alanw5879]

@@ScannerDanner These kind of ecm/pcm failures scare me abit, just because of how a customer may react. Claiming theyre being ripped off and theres no way vehicle can take 4 computers to fix it, them wanting their money back after 2 or whatever days trying to diagnose whats happening. I hear about enough garages taking advantage of people as it is. Maybe coming across this scenario, this model with these codes, just not take on the job altogether.

[@armondoborjas4362]

Going through that now On my 07 sport trac. 🤪 will be watching your finish results

[@ScannerDanner]

Don't be surprised if you need another PCM. Took us 4 or 5 to get a good one

[@Chicken_JAC]

Oh yeah. All this started after I had O2 sensor wiring harness burned onto exhaust manifold. Problem shorted pcm

[@OtherDalfite]

Hey Danner, was there ever a part 3? Im dealing with this too, thank you for the video! As far as i can tell youre the only one with a theoretical solution. Im tempted to open my ecu and see if i can find the faulty chip but knowing ford all the chip designations are probably ground off.

[@ScannerDanner]

There wasn't. It went back to the original shop that changed the PCM as it was a warranty part. Took 7 months to finally get a good module.

[@OtherDalfite]

@@ScannerDanner thanks for the fast response! And again thank you so much for putting this video out there. Crazy how many people have had this exact same issue. I even paid for the motorcraft service TSB/Workshop to check out wiring diagrams for this, no service bulletins whatsoever. Gonna try and spread this video around to a few forum posts I've seen missing the conclusion of this mess

[@OtherDalfite]

​@@ScannerDanneranother crazy thing I've noticed on this. Flagship One is selling new PCMs for about $825 right now. Pretty expensive. Hmm, I wonder what the 2008 4.0. Mustang costs? Oh wow, $272!!! I figure these modules should be interchangable, right? Same shell and everything

[@alrifainidal]

that is great video Mate, and i am happy to see you not angry LOL . i am looking to watch the fix i hope everything will go well with you

[@richardmikolajczakjr5016]

I had similar issue with explorer same 4 oxygen sensors and purge ended being temp sensitive pcm warm days no codes no issues cold mornings codes came back no voltage at o2s and purge code new pcm fixed it and this truck drove me nuts

[@Jsrr-bu1ht]

I had same issue same vehicle. Did a check found multiple pigtails with bad wiring. Fix pigtails and still the issue. Watched your video and replaced pcm. Still same codes and same condition. Really stupid.... ended up finding fuse 42 blown. Blew another fuse and found another bad pigtail. Fixed it replaced fuse now all good.

[@stationaryenginesworldwide]

great video Paul and Caleb.looking forward to the next one....aka THE FIX

[@lanwickum]

Before I watch this. Plenty mentions of multiple ECUs being replaced on other exploders before they got fixed. I would wonder if another problems wrecks ECUs? I would do more checking as you are before throwing another ECU at it. Now, interested to learn what and how you find things.

[@servicesmecaniquev.laverdu1726]

Worked at ford dealership as a diesel tech i had a 7.3 powerstroke IPR circuits problem call out a bad pcm had to replaced it twice, the second one even had a broken bolt in the connector!!! Ended up with third party board repair shop told us the circuit in the pcm was a no fix… finally found one from a scrap truck installed it and programmed it and customer keep on plowin haha

[@ScannerDanner]

Smh crazy stuff we have to deal with

[@jeffcompton6937]

Lol as soon as I saw you on the scooter buddy I though of the jump scene in napoleon dynamite. That should be Caleb's short for this video. "Ever take it off any sweet jumps"

[@ScannerDanner]

🤣🤣 just forwarded this to Caleb, well see what he does

[@tonyhyatt34]

71022srs control chip inside the PCM. It controls EGR, EVAP, oxygen sensors and air conditioning valve. I think thats the faulty part. All those codes are linked to that chip inside the PCM

[@daviscausey4555]

Thanks for this video know it has been 2 years but just had a very similar issue on a 2010 Explorer. I am not a professional mechanic but have been doing much of my own work for decades. Check engine light on my wife's 2010 Explorer came on a few years ago and was a code for the EGR valve. Finally replaced it and the EGR code went away but the next time the car was driven check engine light came back on and now getting these codes. The car runs and drives fine and everything works. Seems to have no "real" issue. Started chasing and troubleshooting and found your video. Been through the ringer with this one and everything seems ok. Seems odd that the PCM is bad since every thing seems fine. And odd that the PCM would have gone bad during the next drive after replacing the EGR valve. Think it is possible that the EGR valve could have damaged the PCM but everything still run OK? Probably going to keep driving it and see what happens. Just really strange.

[@ScannerDanner]

It took 5 modules to get a good one for this Explorer

[@tonyhyatt34]

I'm having the same codes and issues. 2007 explorer 4.0 xlt. Drives and runs good. Just has codes and cel. I'm going to cross my fingers and order a new PCM from flagship. They seem to have good parts from what I've read in some of these comments. Wish me luck! Great video by the way. I wouldn't even concern myself with the codes if I didn't need to pass inspection. It won't pass the emissions with these codes as is. 🤦

[@ScannerDanner]

Good luck with flagship. It's a 50/50 shot you get a good one and unfortunately with this issue, even less. 5 different PCMs before we got a good one for this

[@tonyhyatt34]

@@ScannerDanner did you guys also purchase from flagship or did you get a good one from the junkyard? That's useful info as well lol

[@ScannerDanner]

​@tonyhyatt34 flagship one is hit or miss as I said. But for us, since this was from another shop, that shop did the repair. Where he finally sourced a good PCM from, I'm not sure. But I do know that two of those PCMs came from Ford directly! Crazy stuff on this one man, for sure

[@tonyhyatt34]

@@ScannerDanner crazy it is for sure. Ford should make this a recall with all the problems I see people having with this. Its a faulty PCM

[@ScannerDanner]

​@tonyhyatt34 this is a new problem, we never saw this on these model years pre-covid

[@rickrogers2649]

Great series Paul. I wonder how many Fords end up at the auction because of "ford reman" PCMs. 🤔

[@joshuawelch9701]

was there ever a update to this? i couldnt find a video, awesome videos , keep chucking pcms at it lol.

[@ScannerDanner]

no unfortunately but read the comments! This is a common issue on these and some people had to go through 5+ "new" ECM's before they got a good one

[@bohawkins5258]

I remember I worked on a 2007 Ford Explorer. The complaint was the engine light wouldn’t go off, it was setting codes for all the O2 sensors and TPS voltage. I remember it had a multiple parts replaced, throttle body and all O2 sensors. After taking with the customer, I had learned that the codes were present after the PCM was replaced. The original complaint was a intermittent stall when hot… The PCM fixed the stall but was now setting false codes.. The replacement PCM was the wrong year and for a 2wd not a 4wd.. Installed a new PCM and programmed to the vehicle and all problems were resolved. I was the 5th or 6th shop to get the vehicle.. it was a complete nightmare, which is why I remember it. 😂

[@danhitchcock-gl2nv]

So I have had a lot of these codes started with bank 2 sensor 1 then the fuse was blowing replaced the purge no power for 02 sensor bank 2 sensor 1 which are all hooked to the same fuse I will be looking tomorrow but I am thinking a bad wire for that 02 sensor shorting out and blowing the fuse

[@NIS_ONE]

Another great video and was happy to see part two. Although it wasn't a Ford I recently ran into pcm issues on a Infiniti and have yet been able to get one that doesn't have issues. I wonder if fordtechmakuloco has ran into this?

[@alb12345672]

I wanted to buy a V8 08 Explorer over the internet. It had lots of emissions and VCT codes set (all heaters, MAF, VCT solenoids, wrench light, no cruise). I paid a place to test drive it, It had a stumble but otherwise ran ok. All the codes led back to one Fuse. I figured something was shorted, I saw some pics of the wiring and it looked a bit ratty. Also could be a PCM. These year trucks also have brittle insulation. I really wanted the truck, great price (I see why) but it has to pass NY emissions so I passed on it :(. I also know the cats were replaced and it was in another state but the truck had CA emissions, so that could be a big headache if the cats can't meet the calibration when the problem is straightened out. VA does not check for readiness, where the truck was.

[@singularautomotive3542]

Can rainwater get in that PCM, it looks like it's right under the wiper cowl. I know Ford had this problem on a lot of vehicles. Might explain how it worked for three months then took a crap. Great video regardless, Caleb is doing a great job editing

[@patrickpatterson3239]

So any bad connection would show a big spike the worse the connection the larger the spike that being said couldnt it be confirmed by the large spike on upper or lower side which side of circuit is at issue? Knowing which way the current is flowing.

[@germanmaldonado7526]

Iam waiting for the next part Dan!

[@h2opower]

I tried to find a part 3 but it doesn't seem to exist as I'd like to see the fix to this problem.

[@ScannerDanner]

There isn't one. Read the pinned comment. It took 7 months to get another PCM which was the fix.

[@randyr.parker2698]

WOW! Just WOW!!!!!! What a PITA! Well, hopefully you can get a good computer first time, but, if you do, will it last, or will it fail in a few months? Sounds like they have a real issue with those computers.

[@shiftngearsautorepair805]

Ive had F150s with the same issue. If I see 02 activity with no current reading on scan data, and all 4 02 sensor fault codes, it needs a Pcm. Seems more common on the 4.2 v6. Never seen that issue on the v8s.

[@rollymendoza1028]

When will you post the part 3 for this repair??

[@ScannerDanner]

Still waiting my friend. There has already been 4 or 5 months since the end of part 2 even though it is new to you guys. I wasn't even going to have a part 3 until the garage who did the ECM swap contacted me and said they still have it lol