2010 Explorer Sport Trac 4.0 p0443 p0403

[@bisenbart]

So, is it setting false circuit codes even though the pcm can be commanded to ground?

[@NewLevelAuto]

That's correct. The computer uses a " voltage sense circuit " . It's purpose is essentially to monitor the lines and look for inferred amperage by using a voltage drop. That's the component that fails. I've searched through many engineering papers on SAE to see if more info was able to be gotten to no avail.

[@Airman..]

New Level Auto that's when computer logic becomes Illogical

[@johnaclark1]

That would have mopped the floor with me trying to figure out what I was missing. Thanks for sharing this!!

[@orville58]

@@johnaclark1 your not alone bud

[@richardcranium5839]

one of the few times its halfway safe to use "common failure mode"

[@BigDog50001]

It can control the circuit but the feedback circuit can’t see it, nice. Excellent info Keith.

[@ozzstars_cars]

That's where experience comes in. This would be a head scratcher for sure. Thanks for sharing the info Keith.

[@guayaco-dm3vu]

Good one like always Keith.Learned that issue the hard way.. 1st one kicked my rear end but i made up for it the second time around..😁😁😁 The funny thing is we dont get too many of them not even when they were new.

[@burtpilon1735]

Wow that made sense ... my light when on . Thx for the info very valuable 👍🏻

[@mr.2cents.846]

With navigation package. Beautiful. 💙 Am dreaming if a lightning blue Adrenalin.

[@iandamianluciferwilson7385]

Another bit of information stored away in the grey matter. Thanks once again

[@dalix1951]

woah! that one would have definitly thrown me for a loop.... you don't cease to amaze me. Thanks for sharing.

[@scottpearsontoolsmore185]

Great video thanks brother. So Ford basically knows there is a issue and doesn't care. Just discontinue the part and let the owner of the vehicle suffer. Still you did a great job letting us know what to look for. Keep up the great work see you in the next video thanks again brother

[@willefixit]

you rock thanks a hundred x,twice !!+more.your process is easy to follow ,dont please dont stop.

[@marcoosornio6727]

I remembering struggling with this exact issue, sent the pcm to get repaired with no avail, if only this video were out back then

[@fire7765]

I appreciate you sharing your knowledge, thanks

[@rayrays96]

I baked my pcm in the oven 350 degrees 8 minutes and no more codes. Works perfect now.

[@khash7473]

Salted

[@theadventuresofjavier8698]

I had a explorer that had an intermittent no injector pulse to cyl. #2...i had the comp sent out and it checked ok.after the install all was well...a very frustrating issue indeed...gotta love Ford's

[@billyyoder8171]

Thank you Keith. Good job again. Have a blessed and safe weekend.

[@PineHollowAutoDiagnostics]

Quick and dirty. Classic Keith!

[@8power0]

SO BASICALLY IF I WAS TO ADD A LOAD TO THE CIRCUIT THE PCM WOULD NOT SEE IT...., INTERESTING TSB'S SHOULD COME IN VERY HANDY THANKS VERY MUCH FOR YOUR TIME .

[@marcosgoncalves3250]

Tks a lot. So replace the computer.... not from Ebay. Could you please recommend where to buy it plz

[@chrissaucier9386]

Yeah I just checked one of these out. Same 2 codes. When I had it I detected no faults.... Both components did exactly what they were designed to do. I should have googled it back when I had it. They come back from two dealers that both said ecm... They get here and want me to check it again ! So I googled it and low and behold... Results

[@Discretesignals]

Shouldn't you test to be sure your purge valve isn't open before condemning the PCM? If the coil inside the valve is open, the PCM won't see the 12 volts sitting there and assume the circuit is open.

[@alexklaus8438]

I'm thinking the same, I can only assume a new purge valve was already tried thus calling in Keith to figure out why the cel is still coming on.

[@NewLevelAuto]

Yes I am sorry I didn't make mention that the solenoid was working . This heat will be the death of me .

[@willefixit]

@@NewLevelAuto but you looked at it ,stay cool hydrate,cooling towel around neck helps.worked flight line got way hot .cooling towel helped wrap around neck .hope this helps.dont let heat death you.thanks again!

[@kdmq]

What says is can't be an open winding in the EVAP valve?

[@centariprime9959]

You tested the circuit, not the solenoid. What is the solenoid resistance?

[@edwinquevedo9195]

I have the p0403 EGR and p0443 EVAP but I replaced the evap valve and the code that was erased was that of the p0403 EGR, can someone explain to me why the evap code was not erased? If what I wanted to repair was the evap, not the egr? I'm confused

[@ahmedjhn9199]

i have the same issue with the same codes and it took me for a loop , i replaced the egr valve , the purge valve , the pipe between them , the hole wiring assy for the engine bay , and now im going to replace the pcm .. fml

[@thekingtut1611]

Hello Ahmed,so after replacing all that stuff you still had the cel? So did you replace the pcm and if so did that fix the issue?

[@jgeorges3061]

AWESOME/BRILLIANT THANKS FOR SHARING BROTHA. CHEEEEERS

[@r.j.5897]

Thank for the great news 😢 hoping that it's just the solenoid

[@robinsonsmotorcycleandauto3929]

Hey where did you get that little test light. Would like to get me one like that. Great video as always

[@NewLevelAuto]

Otc3633 is the tool number 👍

[@guayaco-dm3vu]

Or sears..they have a small too

[@robinsonsmotorcycleandauto3929]

@@NewLevelAuto Thank you

[@jddiesel7409]

And even if it does get a good pcm put in it, it's probably going to have broken timing chain guides soon anyway. 2-3 chains in the front and 1 in the back.

[@wyattoneable]

Good information for the memory banks.

[@bradbozarth3235]

Have one with a rebuilt computer still has the same codes besides an A/c clutch code p0645 and a Po316 misfire

[@eiji81]

So this is a faulty PCM? I have the same codes and a few others on a 2010 Explorer. Not sure where to start. Should I replace the PCM?

[@invisibletrailglow836]

Sent my computer out to ebay PCM repair 150 $ IT WORKED. Took about a week to return.

[@easyglaze]

What company did you use off eBay?

[@mansourm7012]

Could u please send me a link for that company? I have the same problem

[@adamtrombino106]

So then is the EGR code erroneous as well, or separate problem?

[@richardcranium5839]

not much sense in messing with it if you have to replace the computer. wait till that is done run it with the new computer a couple of drive cycles and see if it comes back

[@jowayne4661]

hi thanks for this. can the pcm be repaired? or it has to be replaced?

[@edwinquevedo9195]

I have a 2006 ford explorer with the code p0443 purge evaporation circuit fault, the question is if this fault is related to what the EGR valve code p0403 appears, if I change the purge valve, will the two codes disappear?

[@NeNoDaKiNG09]

I have a p1450 code it says unable to bleed fuel tank vacuum .. could this also be a reason? Or do you know the solution

[@haywardsautomotive6156]

Nice diag Keith !

[@Auto-Tech]

Great info. Keith. 👍

[@kellyspeppers]

Ford Explorer is still the exploder. :)

[@parochial2356]

Another "Better Idea" from Ford........

[@sinegra30]

Is this one on a TSB's paper? Thank you Keith!

[@amjad.alashqar]

I have same the code P0443 & P0403 please tall me what I do to fixing this problem Thank you

[@yanierolivera4678]

“FORD” IN SPANISH MEANS: Fabricación Ordinaria Reparación Diaria.

[@NewLevelAuto]

👏🤣

[@JoesAutoElectric]

Nice Keith, I am sure there is a source to get a reman pcm that works.

[@NewLevelAuto]

Soooooo many shops here have tried , and soooo many have been burnt by bad companies

[@Mohanned1979]

So there is no solution

[@becon776]

???👆

[@culibaavto7673]

Очень интересно но ничего не понятно 😕. P0443 в чем причина, как починить?

[@rrmech11]

Keith The pcm turned the purge on. How is it bad? You lost me. Oh a false code.👍👍

[@Blazer02LS]

It can activate it BUT it cannot tell that it actually did.

[@rrmech11]

Ok. I've never seen that. By the way I'm one of your subs.👍👍

[@themechanic6117]

@@rrmech11 ive never seen that either. Really interesting

[@NewLevelAuto]

Take a look at my pinned comment

[@enriquefarias853]

Great info ,thanks

[@Dillon_is_him]

But it doesn't apply if you don't have the p0443 with 403 code. Correct?

[@NewLevelAuto]

Correct

[@Blazer02LS]

Had any luck sending them out for repair? Or is this one of the ones that uses custom chips that were obsolete the day they made the first one?

[@NewLevelAuto]

I haven't found a single good rebuilder to date on these. However a few Cardone have come through okay here and there from their stock. But none that have been sent for a rebuild come back working properly yet.

[@Blazer02LS]

Figures. Probably lack of info on them. Have you tried United Radio up in Syracuse?

[@adamking6419]

I had to watch that one a few times for it to sink in !! Could you not have a software rewriter/mapping company remove the fault code from the software so it doesn't set the code.

[@weldingjunkie]

So because you can command it on the circuit is good. The PCM module can’t so that’s how you know it’s bad right?

[@Blazer02LS]

The PCM can command it BUT it cannot tell that it did.

[@weldingjunkie]

Blazer02LS so it’s not able to verify it’s command? Because it seemed like Keith had to command it using the scanner because the pcm couldn’t command it?

[@Blazer02LS]

Yep, that's the problem. It cannot verify the command so it thinks there is a bad circuit.

[@weldingjunkie]

This Black Dude unless you get the module replaced

[@Blazer02LS]

Correct, replace the module or figure out which component is the failure item and replace it. The first one isn't that difficult while finding the data to do the second could be depending on what they used to do the job.

[@Jpilgrim30]

Just did a sport trac last week with the same issue. It’s pretty dumb of Ford to discontinue a PCM they are having issues with. Makes it harder for us and they’re losing out on money they could be making off of them. Don’t see this problem going away for a while with how many of these vehicles there are on the road.

[@Blazer02LS]

Ford likely figures they already made their money, screw the current owners. They are not the first with that attitude...

[@ThEmEsSiAh187-CFGeorge]

So what do you do in this case? Find used PCM’s? Or rebuilt ones? I have seen this problem on 2006 and 2007 Fords. We usually find use PCM’s or in one case a reman from cardone. Any other ideas? 😢

[@becon776]

I hate that the replies end here

[@easyglaze]

​@@becon776I just replaced mine with one from eBay. It took away my oxygen codes, rough idle/stalling & is allowing my AC clutch to properly engage now, but unfortunately the evap codes came back and now an EGR code has popped up. I'm happy that the car is functional now, but I live in a state where I need to run it through inspection smh I'm pissed

[@sKid-ts7hr]

I have these code with o2 sensors codes on my 09 explorer 4.0 is it ok to dive with ? I don't want new pcm

[@63256325N]

So in other words you're screwed. Engine light on no sticker. No replacement computer? What, throw the vehicle away? Ford....found on road dead. Thanks for the video.

[@throttlebottle5906]

move to an areas without inspections or testing, solved ;0

[@skepticalhistorian797]

Engine will just start hard until warm

[@Autofixpals]

So your telling me that this person still has a 4.0L ford engine that still runs. Mind blown!.. I was working for ford when those terrible 4.0L engines with the stupid timing chain in the back of the head were still being put in new vehicles. the 3.8 and 4.0 ford V6 engines are some of the worst. 3.8 takes the cake (head-gaskets galore) but the 4.0 was not too far behind... its crazy because the 4.6v8 and 5.4 (2valve motors) were some of the most reliable motors ever. go figure.

[@JoesAutoElectric]

The 4.0 was actually a very good engine. As much as people make fun of Ford, the truth of it is they are very good. The 3.8 had head gasket issues, but let's be honest here. I have had 4.0 engines with 300k on them running just fine. I still work on many of them for my customers and they have very little in the way of major issues. Unfortunately the timing chain setup is junk. If it fails, better to put a new engine than waste the time pulling it to do chains.

[@Autofixpals]

@@JoesAutoElectric I remember condemning a lot of 4.0 engines as needing to be replaced because of timing chain issues. I give ford lots of credit i drive a ford, my wife drives a ford, i have owned at least 3 or 4 in the past. I suppose some folks get lucky and have no issues with their 4.0l or maybe the second generation was sorted out. But i personally have never been a fan of that engine. In fact i beileve their was a recall on the chain tensioners or something like that on the earlier versions. Yes i remember the 3.8 head gasket issues, i was one of the unfortunate people that had the pleasure of doing the headgasket recalls. The 3.8 and the 4.0 where the most commonly torn apart motors (for repair) when i worked at a ford dealer late 90's to early 2000's. Today, i dont believe they have any engines that are considered a disaster. V6 water pumps are unnecessarily difficult to change, but they dont fail often.

[@roadkill5333]

Nice work! I would wager that you hair a thinner hair issue, after all that! I know that if I had any hair, I would have been pulling it out, too!! wink wink I just scanned the comments, briefly! I couldn't find any of those Ford boys, singing the praises of the ole venerable automobile that will live on into infamy!! Lol I've recently been searching for the CHEVYTEKMAKYOULOCO KZbin channel, but can't find it! Where did it go?? (;-O)---

[@amhfpv]

how did you fic it please

[@amhfpv]

*FIX*

[@benniewilliams2019]

I have issue with the accuracy of the test light check performed as proof the PCM is at fault! As performed on the video, it only read the voltage present coming FROM the PCM with KEY ON (brown/yellow wire) and does NOT check the wire going back TO the PCM in this 2 wired harness that controls the action of the Purge Solenoid Valve! This only proves you have good voltage coming TO the Valve with KEY ON! This return wire to (I assume is the ground back to the PCM) could be compromised (open/shorted/intermittent) and the cause of a fault. OR, it may a signal wire to another circuit in side the PCM that controls another function??? Although it is stated, a PCM change cured the problem, the disturbance and handling of the harnesses and wires involved to do so, may have temporarily cured a weak connection issue, that was the true cause of the check engine light! Removing and replacing a high priced PCM with no proof of it being at fault is not good troubleshooting (swap parts until it works!). BOTH wires to the VALVE should be checked for continuity/short to ground with the KEY OFF as a first step. Then BOTH wires (red test lead to brown/yellow and black test lead to black) should next be checked for DC voltage with KEY ON. I also have a hard time believing a reputable PCM Repair Company cannot find a fault and repair a PCM much cheaper than buying a new OEM. ps: my Ford dealer stocks the PCM for 2006 thru 2010 4.0 Ford Explorers ( not discontinued). The over the counter cost ...$600 plus $400 core!... no way I would go that route vs finding a reputable PCM Repair Shop ... and only once I find the fault with my PCM! Although I do find this is a GREAT and very APPRECIATED video, I only give it 4.5 stars as I question the logic and test procedure!

[@billyr9840]

Nice !

[@phillipzan2005]

I don't see how u got a computer out of that test?

[@NewLevelAuto]

sorry Phillip , I should have shown that the solenoid itself was also working rather than just using the test light. It is insanely hot in that shop and I was rushing to move along . If you look at the pinned comment , I've also given more information as well.

[@willefixit]

@@NewLevelAuto wheres the pinned comment at ?

[@karpenterken1]

@@willefixit at the top of the comments.

[@msanford8741]

2003 Olds Bravada 4.2 PCM is not controlling ignition coil #2, control wire (2122 red/white) is good between coil and PCM. Scoped CKP and CMP, good clean signals. PCM? Or am I missing something here? Thanks in advance to anyone that may chime in.

[@Autofixpals]

as long as the control isnt shorted to ground, you have good cam and crank signals that are in sync i would say you have a faulty PCM. Did you check for TSBs?

[@msanford8741]

@@Autofixpals Thank you for the advice. PCM replaced. Cylinder #2 ignition coil control has been restored.

[@Autofixpals]

@@msanford8741 Glad that worked out for you. Great job!

[@regiodemty6122]

F. O. R. D Fix. Or Repair. Daily

[@pelacuas520]

2nd

[@kevinbarry71]

Ford makes an unreliable part, discontinues park, and they wonder why sales go to Toyota.

[@checkenginelover]

1st

[@regiodemty6122]

F. O. R. D Fix. Or. Repair. Daily