Troubleshooting a Shorted 5v Reference Circuit (Chevy Silverado)

[@cameronp5728]

i am a mechanical engineer that has been working on cars for 10 years as a hobby, your class has given me the confidence to start my own shop. I am able to digest the theory side really well and everything has been clicking. your technical approach and your explanation of circuit design has given me a higher level approach to diagnostic work than i ever had years ago. I am now in between my full time job and running my mechanic business outside of normal business hours and weekends. Your classes give me so much confidence in my work, all of my diagnostic work is guaranteed, if its not fixed the first time, the repair is on me. so i better be right the first time!

[@ScannerDanner]

Would you do me a favor and copy and paste this comment here? www.scannerdanner.com/leave-read-feedback-new.html Thank you so much!

[@cameronp5728]

@@ScannerDanner will do in the morning. Currently reconciling some tool expenses 🤪

[@mikeb4824]

Your a true hero for standing behind your work.......I would take all my work to any shop that just guarantees that if they don't fix it, you don't pay......(which is exactly how it should be)......but if you fix it correctly (the second time) and still don't charge them......your a legend. Because in that scenero.....we should only have to pay for the actual fix and not the first misdiagnosis.......but no where even does that!

[@johnnysprocketz]

Probably some dude in his mom's basement

[@woffordsoverlandjourneys8618]

Where you located😂??

[@cobbysparks9891]

As a certified mechanic, I’ve worked on my own car for years and don’t like people messing with my car. Knowing this, My buddy asked me the other day if there was that one person I would allow to touch my car without question who would it be. My answer “Scanner Danner”. Personally, I don’t think anyone does it better than you. God Bless you my friend. And God bless your family.

[@ScannerDanner]

Nice! Thanks man. And my answer would be my brother!

[@frugalprepper]

@@ScannerDanner I would let you work on my car too, but only if I got to watch!

[@billk5631]

@@frugalprepper When you watch the hourly rate goes up 30%. If you help it's double

[@CameronDC-Grimes]

My rate doesn't go up for those interested in working on their own vehicles. Anyone wanting to learn their own repair and maintenance is solid in my book ​@@billk5631 It's when they start messing up shit, or try to control how everything is done. That's when the rate doubles, and I tell them before hand, no backseat driving on parts installation or diagnosis and only do what I tell you to do and I'll help you understand the diag side and physical motions of removal/installation. But I did mobile repairs, wouldn't have time for that on flat rate in a shop, especially dealership.

[@ahkillez64]

Love that feeling of finding the problem and getting it fixed. It's a priceless feeling and confidence in future jobs grow

[@paulmonk7820]

DANNER's hands are cleaner!!!

[@dominicene3647]

I loved the dialogue between the brothers. Both are knowledgeable and passionate on getting it right.

[@drummerboysmith968]

I love watching your videos. You're a great teacher. I was an ASE certified automatic transmission rebuilder but I'm retired on disability with a bad back. Transmissions are heavy. I've always done my own work on my stuff and could pretty much fix most stuff but electrical work wasn't my strong suit. I'd get to the root of the problem but I've replaced a few unnecessary parts along the way, I must admit. You have given me some valuable information and I have a problem that I've been ignoring for some time and will now dig into hunting down what I believe is a similar issue in my '93 Villager. Thanks for making these videos, bro..

[@travisc5658]

Still got 20 min left and damn- this guy is a real- educated- amd mainly EXPERIENCED tech. Good for him. I hope others follow.

[@wyattoneable]

"Kick me" that was funny. I always enjoy the conversations Paul. Virations, heat and now add "contact points"...check. After all these years of watching your channel I still get a kick out of seeing how much one little wire can cause so much work... and learning. Yes, Caleb is doing a great job at editing the videos.

[@themechanic6117]

The happiness that comes over you when you find the rub through on a wire lol . love those moments .great work .

[@scottsmrcka2769]

The mech a nic So true! Highlight of the day or maybe week if it’s one that is really fighting you.

[@alexsquared1460]

Once again one of the best (if not the best) diagnostic work on the internet hands down. The issue was corrected with use of no replacement parts and just a few tools. Great work. I love these videos.

[@tdltransportation9103]

Dude you are really what's up,and good at what you do.I took my truck to a mechanic that could not figure out what was wrong with my 2009 silverado.I had a p0641. After watching you on KZbin I followed the rail 1 that included, map sensor,ac pressure switch,cam sensor,map sensor. Inspected these item and found that the ac pressure switch wire was ground taking the 5 volt reference from my pcm,which made my truck stay in reduced power mode.Dude keep up the videos.You guys are lifesavers.💯🙂%real dudes

[@ScannerDanner]

So awesome to hear that you fixed something yourself that others couldn't. Made my day

[@NoWr2Run]

HOLY CROW OVER AN HOUR VID. BY SD & HIS SON, YES.

[@watermalanblew]

Suck them up then

[@8953147]

I really enjoyed the dynamics of " the Danners" troubleshooting this problem together!! Great family involvement; looking forward to more Danner interaction. Great lesson on the visual Paul, by the way!!!!

[@spelunkerd]

Great to see the whole family involved, brilliant diagnostics. Intermittent problems are hard, especially on a professional time scale.

[@foreverwood1963]

Man you are a workhorse. Amazing you found that. I'm a medical professional and you have me looking at all your videos

[@ScannerDanner]

Nice! Thank you. BTW, I think most doctors are "parts changers" too 😉

[@foreverwood1963]

@@ScannerDanner LOL good one

[@mikeoneill7360]

You guys are really good, full of knowledge, and a God send for most of us, awesome.....

[@Toys4Life]

Love how SD talks (says what he is thinking) while he works. Lets us know his thought processes during the whole diagnosis. Excellent!

[@stoneyburke2412]

Great jobs as always Paul, I've learned something here that I never really thought of and that is when you have that type of code, to check your contact points first before touching anything. Thanks for all you do. And thanks to Camera man Caleb.

[@mach1motorsports828]

I had a Chevy Cruze with all these exact issues, only difference is I had a fault on all 5 of the 5v ref circuits. I ended up putting a used computer in and that fixed the issue, I am still not certain that was the issue but I could not find any issue with the harness and all 5lines had good voltage. Thank you for the amazing work you do.

[@johnaclark1]

Sweet video! I had this very issue with that harness. I had a 2007 Yukon that came in on a rollback. It was a no crank-no start. It had rubbed through in that very same spot. It would blow the fuse for the starter solenoid signal. I found it using a test light with the clip connected to B+, connected it to the solenoid wire and wiggled the harness, starting near the starter and working toward the fuse box, until the light came on (test light on = short to ground.) From the factory, there is supposed to be a plastic cap on that stud.

[@mikedaacmech383]

Great video Paul. Recently worked on a toyota faulting a cam sensor. Popped the hood and after a quick visual found broken wires. LOOK first people. Save yourself time and money!

[@hhizer4328]

Really enjoy your work and enthusiasm for teaching others. I had a similar issue on my Yukon XL. Ironically, the conduit was also very deteriorated. Makes me wonder about quality control.

[@AllenNix-iz6ev]

Might have to watch this video twenty more times to catch up y'all ... But I really enjoy watching the terminology of someone who's intensely focus on what you do ... I'm enjoying eating popcorn and learning at the same time ...

[@ScannerDanner]

Nice! Thank you

[@zaheedbaksh9304]

You have great logic.scan tool never tell you where is problem ,but what is the problem.

[@arthurfricchione8119]

Paul James and Caleb you three guys working together is great.love the fact all 3 of you gave inputs to the problem. Seems like 80% of electrical problems is wiring. Like how you brought to our attention two 5V regulators and how they survive being shorted out. Need to get one of those long probes. Anyway great video guys. Have a good Labor Day weekend all three of you and your families ❤️❤️❤️ Artie

[@TheVintageEngineer]

My thought was to put a vinyl vacuum cap on that exposed stud. I’m wondering if there was a stud mounted panduit tie there originally (or at least suppose to have one and never had it installed).

[@jamesparson3526]

I almost instantly had the same thought. Not a permafix, but a damn sight better than the way it sat.

[@russellstephan6844]

A small piece of fuel line over the stud would work too. I'd safety wire the hose numb in-place. But, I'm one of those, fix-it-once-for-life kinda folks.

[@GeminiSeven43]

possibly add an acorn nut to the stud that is rounded and smooth and less likely to cut into the plastic wire cover

[@davidb.fishburn9338]

One thing that you forgot Paul, was to say to look at and read the code description first. That's the one part parts changers skip over. The description literally will say "circuit" in it, but parts changers ignore that. I'm a Chrysler dealer tech, and have been taught to check everything before making a call on a problem. A good example is the 3.6 engine, it had a flaw in one of the cylinder heads when it first came out that caused a misfire problem. Parts changers would have thrown plugs and coils in it before discovering the true cause. Read the descriptions, folks, all it does is point in the general direction of the cause. It's up to you to investigate and find the cause of the problem, like Paul did in this video. Great work, Paul! Also, a vacuum cap on the stud would have helped to fix the problem.

[@ScannerDanner]

If you find my KZbin videos helpful and want to support me, consider joining ScannerDanner Premium. This way you get something for your "donation"! SD Premium is why I do not ask for channel support here on KZbin! You can sign up for ScannerDanner Premium here www.scannerdanner.com/join-scannerdanner-premium.html we offer a 14 day free trial and it is only 36 cents per day after giving you access to 515+ videos and counting.

[@bombay6760]

I just purchased a shirt. Thank you for everything you do.

[@ScannerDanner]

@@bombay6760 thank you!

[@dtnel]

Well worth it for the Premium Channel! ALOT OF CONTENT !!!

[@dtnel]

Any chance of having shirts with the little pocket on left upper chest? Like sticking a pen or two in there for easy access. Also a banner, emblem or something on the back would be awesome. Check out Eric O's shirts that he has from South Main Auto that are on Tee Spring. Logo with a saying and the scope on a rope or something representing diagnostics along with the website name. Free advertising for you... oh wait then I have to send you a advertising bill monthly... Lol... JK....

[@ScannerDanner]

I look into it, thanks!

[@ozzstars_cars]

Nice job finding the initial problem and explaining what was going on. Nice job with the editing Caleb.

[@mechanicmatt871]

Nice find on the wire rubbing on the stud, and the "kick me" on Danner's back made me laugh. :-)

[@PistonShack]

That is so awesome to see when your son is interesting to learn skills from you. Thanks for the vid. Continue watching..

[@johnhnetkovsky8917]

'That's a good hole" :) Also bought a SD shirt for good cause!

[@ScannerDanner]

Thank you!

[@billziegmond4943]

Awesome video about why visual inspection is so important and how a dtc code is just a guide. If you got nickle every time I tell my one buddy don't be a parts change. or Eric O Don't load the parts gun. Ya'll could retire. Caleb! Your editing rocks. Especially now that you highlight put a box around what your Dad is talking about! Great job all of you!

[@Auto-Tech]

Alldata highlights the whole wire that you touch, plus shows you all the pages in one window (I REALLY LOVE that feature). You took me back to my early days with that "kick me" sign, jajajaja. Keep it up man, i love your work; you're like the beatles (everyone after them were influenced by them). Thanks

[@WatchWesWork]

One can't help but smile at your excitement in finding the rubbed wire, even though I'm sure you've seen this kind of failure hundreds of times.

[@ScannerDanner]

I love the detective work, so much. I really do. And when you put the pieces together and find the real issue, there is nothing like it! It is why I am in this field!

[@GRUSSNewton]

Fantastic video! Real world learning with a relaxed learning environment. Love the brotherly banter as well! 😂👍 Is it my eyes or is there purple on that stud from the purple/white wire? 🤔

[@mrharris810]

This was the most in depth yet easy to follow video I have found trying to search for a p0641 code issue on my 2010 Avalanche. Thank you. Now I truly know where to start!

[@charleswayne8595]

Did you fix it bud

[@mrharris810]

@@charleswayne8595 yes i did. I ended up having to wire up a new harness for the throttle body

[@Diagnosedan]

Great find Paul! That could have been easily missed!

[@billrimmer5596]

The other Dan. Super channel!! Diagnose Danner fixed it again!!

[@MD-173]

Awesome! Best parts of this vid is Caleb putting the "Kick Me" on Danner's back and Scanner Danner "coming out" confessing that he loves Phil's probe.

[@helalbouhasson3696]

Don’t be a parts changer 🤓💡

[@jimmydee2171]

Great job ..... Nice fix and went the extra mile to protect it from happening again.Kudos

[@davidd8435]

Little dab of liquid tape and that will be good as new.Put a rubber cap on the stud.

[@ScannerDanner]

rubber cap! why didn't I think of that

[@randyr.parker2698]

Was thinking the same thing!

[@coollasice4175]

Grind that sob down.

[@scientist100]

@@coollasice4175 Don't know if Danner is mocking or serious as he uses the self term "I".

[@crpth1]

@@ScannerDanner- For a cheap but extremely effective harness protection. Bicycle or motorbike tire tubes, very resilient and dirty cheap. Worth to have a couple of them at hand. ;-)

[@codysautodiagnosticsprogra8706]

Your logic to go under the hood due to the heat and probable issues is smart Paul. Looking for contacts points is also huge. Always great videos Paul!

[@TimSmith-ik2sf]

I am sure that it is just a coincidence that the top of the stud that was rubbing the wire looked purple in the video lol

[@SG-go9zc]

Awesome find! Had a similar case at a shop last week. Intermittent reduced power mode and lost 5 volt reference 1. The damage was at the same spot.

[@northernpatriot9078]

Hi scanner danner life took some turns but I'm still here formerly chief eagle bear hope your mom is doing alright thank you. I had a few setbacks but those are just setups for a comeback huaaahh!!!!🇺🇸🇺🇸🇺🇸😎👍

[@jimmywells33]

To protect harnesses from abrasion damage; coolant hose is my go-to for things like this on road tractors. They're subjected to so much vibration but the hose is really tough and works great as a sacrificial layer. Also, a tubing standoff would work pretty good and look better to the eye as well. Thanks for sharing!

[@ScarletKnightmare]

Solid tip!

[@rayhiggins2476]

Great find guys! My 2009 chev Silverado threw 7 codes. I searched all the codes on KZbin. The P0641 code was the last code searched which brought me to this video. Which also ruled out all other codes. I went back out to my truck. Leaned on the fender and looked at the harness and low and behold. Right in front of me the harness was pinched between 2 steel lines. Even the tip of nail polish was used. Fixed the truck with 4” of electrical tape and a drop of nail polish. Saved a pile of money. Went back and purchased a SD t-shirt. Thanks for the help.

[@ScannerDanner]

That's awesome! Thank you so much. Just an FYI, all of my merch sales go to a student grant I have set up for my students at my school www.rosedaletech.org You helped me with that grant today.

[@rayhiggins2476]

T-shirt just arrived in the mail. Looks and fits great. Truck is still running top notch! Thanks again. I have shared my story several times. And still using the visual inspection method every issue I cross in my maintenance position at work. I have currently repaired 3 electrical issues since simply by visual inspection. (Grounded wires on the frame). Excited for my next diagnostics! Thanks again. 👍🏻

[@ScannerDanner]

@@rayhiggins2476 thanks again!

[@mikechiodetti6737]

THIS was absolutely a great example of why the flowcharts can send you the in the wrong direction.......in some cases. Especially with intermittents! Over the years I had learned when I couldn't see the flowchart locating the problem, I tested it my way and made the problem show itself! Flexing the wiring harness (es) moving connectors, heat stressing the circuit, and whatever else worked! You did GREAT with this one! Especially with how the PCM program and the Network function and display the info!

[@Scott_saucier]

2007 Chevy avalanche. 5v circuit 1 came up ..reduced power... EXACTLY what you just went thru...I am sold on you and your chanell..will be signing up....👍👍👍

[@ScannerDanner]

Awesome! Thank you! Looking forward to hearing more from you

[@johnhicks3797]

I had a 2006 Chevy Silverado that the wiring harness had rubbed a pipe coming off the valve cover. I had just replaced the catalytic converter and the 02 sensors due to a faulty temperature sensor upon starting the car up after the repairs the engine idle went to 3000rpms upon startup. I was about to replace the tps and went through one of your video's on cheking harnesses I found the broken wire spliced it back together and i fixed the problem much thanks to your techniques.

[@huzaifarashid1]

Love your content and your way of teaching and recreating everything just for your audience.. love you.. keep it up man

[@EARTHKEENING]

I watched this case 5 times lol it's one of the best 5 v reference case studies.thank you sir .

[@ScannerDanner]

Thanks so much!

[@ricardiagnostics]

Really love when I see you guys together specially when your kid is together is like ohh man family history is everything Well done! Paul

[@sargintrock8663]

"Thru a glass darkly" is how I feel listening and watching yer vids. I don't know enough to absorb all of what you are revealing BUT I come away with pieces of invaluable knowledge by yer expertise which enables me later as I blunder through my Ford Ranger Harness problems! Thank you so much for taking us along. Even though WE are too ignorant to ask questions, WE feel our Brains being massaged by yer input. You are helping many and performing a great service! just thought ya should KNOW!!! Most excellent!

[@ScannerDanner]

I have many Ford case studies on your system. What problems are you having with it? Thank you btw

[@sargintrock8663]

@@ScannerDanner With yer input I now know I have a 5V ref ground as I have lost check engine light on dash along with all dash lights after moving harness looking for problems with ground to fuel pump. I am the third or fourth owner and ALL the "chickens have come home to roost" on this 02 Ranger with rebuilt engine and all original transmission plus wiring harness changes with different wire colors not matching up. I would be totally LOST without having found yer good intell!

[@ScannerDanner]

@@sargintrock8663 if you need a good diagram eautorepair.adtrk.biz/?a=10817&c=24&p=r&s1= This is the DIY version of the same service info and diagrams I us. You need to look up the ground distribution diagram

[@sargintrock8663]

@@ScannerDanner Many thanks. Roger, out!

[@vallerner1363]

Just stumble upon your channel. In am retired mechanic with 37 years on a job. I love your passion and the way you presenting issue and finding a solution. This industry is full of parts changes. Anyway, I was looking for the info to solve my friends issue. Car cranks and will not start. No fuel pressure and no spark. Turned out it was crank sensor magnetizing tip covered with rusted metal pieces. cleared rusted junk and car runs. How often do you see that? Older car. 2006 with high miles. love your scanner. makes life easy. your got a new subscriber

[@ScannerDanner]

Thank you and welcome! I don't see that often and that's a great catch on your part!

[@smilingcopycat]

This video is such a good example of how to attack a problem and the passion you guys have is so important! So fun to watch!!!!! Keep it on, cheers from Sweden....

[@melissawilliams7409]

Totally agree that parts changing has been getting worse! Thank you for expressing that! You rock! I love your videos and I pass a lot of your stuff on to my auto tech students! Thanks again for showing how it's supposed to be done!!!

[@enriquegomez260]

OJT in the purest form. There are so SO many “Instructors” and or so called Teachers out there that have absolutely NO actual field experience…….. I not saying that alone makes them a bad thing but to me and this is just a very personal opinion, is that if you are a 67 year old that has come up in the field that you are now teaching to a younger generation and you are still practicing out in the field, while still learning every day………. well to me that is as close to a Perfect Teacher as anyone can get. I have but one word for you, especially at my age…….. and that would be “RESPECT” and lots of it. Wish you and yours nothing but the very best.

[@ScannerDanner]

This comment really means a lot to me. There are many in the YT world who don't understand that I am a teacher at heart and the methods I chose while troubleshooting are many times dictated by an opportunity to show a fundamental test in a live situation. Not sure if this video had that or not, but again, really appreciate this comment

[@enriquegomez260]

Just know that you are definitely far above the rest of the folks not only on this platform but in the Teaching World. I will be 67 in June and I have been wrenching since I was 13 or probably even younger……. I actually grew up around guys like Horse with no Name( Jim McKay ) Mr Z , ( Art Peña ) and many others like them. They were ALOT older than me but they let me learn with them…… stuff like the Hurricane Chamber ( Art Peña ) and how to build a Motor so loose that it actually rattled when you first fired her up ( Jim McKay ) I still hear him in my head….. Loose, you want her loose, friction creates heat and heat kills horse power…… we all thought he was Crazy……. hell he never honed the cylinders, he wanted them as shiny as possible….. corse all this would never work for a street application but on the 1/4 mile……… man we was running low 9’s with total door slammers on pump gas…… no nitro no gas no nothing just pump gas with maybe a little a avgas when we could afford it. Mr Z ( Art Peña ) was actually my History teacher…….. so you see I have been around guys that actually would be in your class of Greatness, you have a God Given Talent, plus you definitely know what your doing and you are humble enough to keep learning. You are definitely heading for HUGE Success Mr. Keep on Teaching and DO NOT Change the way you are for NO ONE or Nothing! There is just nothing else I can put into words. By the way, you have a huge Amazing following and trust me when I say that I am NOT the only one who feels this way about what and how you do things. I took my time and read why down on a lot of the comments strings, so I am absolutely positive about what I just said. Anyone around you but especially your son, family will benefit from what you are doing. Stay true to yourself my brother and take care of that awesome family of yours and KEEP TEACHING! Your friend in Alabama Enrique Gomez

[@mike-yp1uk]

Don't forget the book. The book is amazing with hyper links to videos showing the material. The book is great.

[@gilbertmunar2278]

How much it cost you for the book and what's in it?

[@chevypu35]

this video taught me why i bought a modis with scope. was able to find a shorted tank pressure sensor on a 15 silverado with a p0641 and multiple other codes on the same 5 volt circuit

[@magogomez7664]

Don't be a parts changer.mad respect.thank you sir for this video

[@dandearman2871]

I might have thought about shortening up that stud that was sticking up like a dagger or putting something over it. You are exactly right. Learning your fundamentals and how things work gives you a very great advantage fixing problems. Great job.

[@JD-526]

Sweet, found the problem. You are definitely smart and experienced, however this comment goes to your son who makes your Channel, through his editing skills, look professional. Great job kid. Keep up the great editing skills.

[@ScannerDanner]

Thanks for that, I read this to him last night :-)

[@4g63a1]

great video. i have been searching for wiring diagrams and 5v reverence info for 3 yeards now. i already boughyt the mitchel program too. thanks for a great video

[@fire7765]

Absolutely, awesome critical thinking and diagnostic skills. great camera work Caleb, thanks you two.

[@ScannerDanner]

Caleb is getting really good at his craft. I'm super proud of him.

[@mardo54321]

i use this idea on my sister car,because VSS got malfunction and i use a multitester to check the 5v ref voltage and it is 0 dcv to make sure i turn the key off test the 5vdc output to resistance to to body ground and it got shorted. this video is a big help for me 😊👍

[@cmoney1218ify]

Thanks a million! Your tips were a game-changer. I followed your advice and fixed my no spark, no start issue with the crankshaft position sensor, even with it disconnected. Your videos are an invaluable resource, and I'm grateful for your expertise. Keep up the awesome work!

[@ScannerDanner]

Awesome! Did you have a shorted 5v ref?

[@cmoney1218ify]

@@ScannerDanner Absolutely! I did notice a disconnected wire that had broken off on a stud on the engine. Upon further investigation, I found that the two-wire crankshaft position sensor wasn't receiving voltage from the PCM crankshaft position sensor side. However, there was voltage on the PCM side, measuring around 11 volts. Your video really helped me narrow down the issue and emphasized the importance of checking wire contact points. By following your guidance, I was able to successfully track down and resolve the problem. Thank you for your valuable insights! By the way, I have a 2008 Ford Escape 3.0l.

[@SuperMarioDiagnostics]

Nice find! Love your reaction when you find the fault lol it's like seeing dudes that go deep sea fishing and they catch a huge fish! Love it brother 👍👍👍

[@TheEvilMechanic]

Great video. Just had a similar issue on a 2008 Express van, 4.3. The 5 volt ref 2 wire was shorted to ground. Had rubbed through at the right hand valve cover front bolt. Thanks for all your great videos and information. I'm still pretty new to mechanics, only 42 years.

[@ScannerDanner]

Thank you! If you are looking for more I have over 500 videos on my website with a mixture of classes and case studies www.scannerdanner.com/join-scannerdanner-premium.html It's $11 a month and I offer a 14 day free trial. Hope to see you there. Thank you either way! Just watching and sharing and commenting here is support enough too

[@TomAutoTV]

Just had a 04 suburban with intermittent A/C found shorted wires to A/C pressure switch in the same harness, same spot. Thanks for the vids

[@richmhwd]

You make advanced diagnostics look easy.. Great job

[@flightgod9904]

I actually seen the same hole and thought maybe nothing but after accidentally watching ur video at 1230am lol this was actually the problem thanks man 🏋️‍♀️

[@jaimegeoffroy5028]

Hey I want to say thank you for this video, we sent our truck to the dealer and they never figured it out not to mention replacing tps gas pedal and the throttle body over $1000 and a dang video was found and fixed it. Again thanks for the share.

[@ScannerDanner]

Hell yeah, awesome. Thank you!

[@michaeljohn8905]

I love that you guys are part swappers ! I try to teach my guys that electrical is almost 80 % of the problems i encounter when im diagnosing the problems in the airplanes i work on. Learn your electric basics ladies ! It will you Help you more than knowing if you got a freaking valve leak. STOP PARTS SWAPPING ! Learn diagnostics please ! 🙏🏻 lol Great video Scanner Dan & Bro. !

[@nancylewis7142]

Thank you Danner, one hour long video, that's mean I'll be here watching your videos again.

[@joshc5658]

Just had this exact problem on a 2015 Dodge Ram w/ 3.6 Penstar this week. First step I took was disconnecting each sensor on the circuit one at a time and retest. Found the culprit by wiggle testing the harness section by section until the problem disappeared. Found the short to ground at the passenger valve cover stud near the firewall. These take some time to figure out! Great video guys!

[@patrickliverpool6487]

Great job Paul I love your motto. Don't be a parts changer. I am on the same page going the extra mile to find the problem.

[@weldingjunkie]

Great video Paul, love having the family in the videos. We are lucky to have great family even luckier to be able to work side my side. Have a great Labor Day weekend, I’m sure you guys will be doing something fun... Jay

[@chriscrusader5412]

Schooling your younger Brother. Priceless. You guys are awesome!

[@simplegamer8900]

I had same problem like this in yukon 2k16.even if i am a certified mechanic i do believe scanner danner helps me alot when it comes some troubles...great job

[@alphajalloh6903]

You are a great father and human being thank you for your head work.

[@renefuller9241]

I'm seeing more and more of those tools actually warning people not to change parts based on codes. What those tools (FixIt and such) are made for is to code hidden features (such as moving the passenger door mirror into a parking setting, etc). Those are the things that dealers charge an arm and a leg for. And those situations are the ones that the marketing is targeting. Another example is a dealer turning the parts cannon on and pointing it at your vehicle. In that case you can use the tool to give you an idea as to why he is doing that. Unfortunately, not everyone watching your (and other) videos understands that the tools you guys are using cost several thousand dollars, and you got to be trained to use them correctly. A lot more training is needed for young techs. A big Thx to you and other youtubers doing a great job at teaching that knowledge. We need more.

[@06goatm6]

Just had a 0651 in my GFs sons 07 Cobalt. We were able to borrow a Snap on Scan tool so i could monitor the voltage of Ref 2, i started unplugging components on that shared Ref since i checked for contact points and animal chewing damage already. When I unplugged one of the components the voltage jumped from 1.4 to a steady 5V, it must be shorted internally. I cleared the code and it stayed away, the car fired up and ran on all 4 cylinders. Waiting for the part to arrive tomorrow to install it and make sure its 100% repaired. This so happened to be the secondary air injection valve, or "Diverter valve" as rock/auto and the parts stores are listing it. I'm glad mine wasn't a chaffed wire or broken wire as they can be absolute nightmares to find. I did learn/reinforce previous lessons today though. Contact points, I will try and remember that phrase.

[@neighborhoodlawncare9872]

49:12 - now there is a great video for you. I have a 2009 Chevrolet Silverado 2500HD with that exact same problem that I have been tackling for years. After watching this video I’ve been trying all your techniques and keep coming with the same answer. Replace the part. I know that’s not the right answer but there is nothing out there to help fix the problem. “Service trailer brake system” on the dash board.

[@ScannerDanner]

What are your codes? Do you have an enhanced scan tool that will read all modules on the network?

[@Ocean_breezes]

I have a 5v reference on my PCM that is reading 0 3 vdc at the PCM. That reference powers 5 sensors. The easiest way to find the "short" is to use a multimeter and probe the pins of the "sense" signals coming back from each sensor at the PCM connector. That saves a lot of time .

[@nicknicu1787]

Awesome stuff Paul! I was thinking it will be underneath touching the exhaust or something, when it was right at the top! Thanks for bringing us along! 👍

[@hamsterh2b53]

Just finished my electronics class I watched the entire video. Understood every single thing you said.

[@hamsterh2b53]

Too bad I’m Broke or I’d buy your courses

[@ScannerDanner]

@@hamsterh2b53 it only cost 36 cents a day to be part of it :-)

[@harindersran4838]

Its very clear and knowledgeable video by a SD. Great work.

[@ScannerDanner]

Thanks a ton

[@tonypond8196]

This is the best sd diag video so far love this stuff . thanks very much S.D

[@ScannerDanner]

really? Thanks so much.

[@armandonika]

I can’t decide if its the best it has a lot of great videos, since Paul likes bypassing stuff to make it work, which is what i do LOVE i guess there are a lot of other GREAT videos!!!!!

[@autotechmike]

That was a great find well done.

[@autotechmike]

I actually had one of these a couple weeks ago and it would do the exact same thing. Everytime you grounded it out the symptoms would change. It was in that exact spot same bolt. So I repaired the harness and added a vacuum cap on that bolt.

[@MatthewHolevinski]

The greatest diagnostic tool ever devised by man. Wiggling. I try that on my wife sometimes when I am trying to diagnose an issue with her.

[@ScannerDanner]

😂

[@VoltageDropDiagnostics]

This became one of my favorite videos of yours! This is a good one!

[@lubacotemobile]

I had almost the same issue with a #7 misfire on an F150. Heat had killed the harness going into fuel injector an was still inside the harness. Virtually came apart in my hand when I moved it. Danner you're like a spider with your diagnosis!

[@irish6976]

Wow! Awesome video! Great lesson to an old gear head like me! And the degraded mode run due to intermittent ground short to 5v2 reference! And you'd think that some software designer, made it to operate that way in the fail mode. But, this is not written down anywhere in a shop manual. OK, think, Fix the problem, replacing parts is expensive. SD you are the man! Teaching pure troubleshooting logic! thanks!

[@ScannerDanner]

Thank you!

[@frugalprepper]

You should get the 43mm 0.45x Wide Angle Lens for that Canon HFR Series. It make a huge difference in tight spaces under cars. You can get them for $15 on amazon. It's also nice because it protects your main lens from damage.

[@pooldoctorofclermontinc5788]

I received the SD coffee mug this past week to add to my collection. I love it! Hello from Minneola Florida.

[@ScannerDanner]

thank you!

[@roadkill5333]

DANG IT, SCANNERDANNER!! I saw the reference to this video, in the vid you just loaded, and I couldn't believe my great fortune, getting to watch a previously unseen, HOUR + long video, while eating my dinner!! I finished watching the other one, and went thru all of the trouble backing up, clicking the link, and setting up playing this, and BAM!!! Last weeks video! I even saw I thumbs up'd it, and commented!! I was so stoked!! And now, I'm a sad, unhappy camper!! Dinner just don't taste as good now!! I didn't even get the first bite, down!! Bangin my head!! Woe is me!! Oh well!! Maybe Cody has a new one out!!! Lol

[@ScannerDanner]

😂😂😂

[@terrymoore1978]

This video just fixed my daughters car. Thanks for the education.

[@shaneadkins4323]

I’ve seen the green wire come out of the CPS plug 3 separate trucks. Hell one of them sat for 4 years cuz nobody could figure it out. Great job fellas.

[@PeterMilster]

Preach it brother I get this all the time parts changers and then diagnose the real issue after customer has spent a fortune on parts . Having a similar issue on 08 Montana but P0641 Ref 1 5V and throttle not working proper . You have to be careful and take a lot of the info on You Tube with a grain of salt as it may lead you in the wrong direction, do testing and diagnose what is going on . I like your approach keep it up .