OBD2 Port Doesn't Communicate, But Has Power

[@dcfgarage]

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[@guybates1192]

Fantastic thanks. Just dirty scart pins. Fixed with a squirt of electrical cleaner and scanner works again

[@dcfgarage]

Awesome!

[@lobokurt4922]

Is it ok to spary without disconnet battery?

[@henm4975]

@@lobokurt4922 electrical cleaner is non conductive

[@BigAl1381]

Finally found a video that was helpful. All the other videos say it’s just a fuse facepalm* Thank you!

[@Kyle-ev4fk]

thank you for a quick, straight to the point informational video!

[@patdemers4229]

My 2006 Frontier, same problem. Power, no communcation with DMV. Told by garage today they found that a pin in the Data Link Communicator, or the OBD2, needed tightening, when they t4ried to plug one into the other, the pin wasn't making contact where it should. I was told they tightened this one pin, probably #16 which is the communicator pin from what I've read. So that is the problem I had. It is fixed, as of today. Happened last year too.

[@samrodian919]

Thank you that was very useful as I have the same non communication problem on my Range Rover 4.2 supercharged. I hop mine is an easy fix like this one. Bet it ain't lol

[@JustMe-xv6kk]

This is a great, helpful video! Having same issue with a 1996 Jeep Cherokee. Hoping to try this. Hoping it'll work for my Jeep. If it doesn't, what else could it be? Already tried a different computer, but that didn't solve the issue. Thanks!

[@ramongalavis3328]

Very nice job. if am not wrong pin #2 from Obd2 connector corresponds to Can line-H and #4 it's one of the Grounds. 👍😎

[@dcfgarage]

Thanks for the info

[@RoqueCastillo-p8l]

Bro you seem very knowledgeable on this topic… question…. I have a 2012 town and country, the obd2 has power but will not read… replaced tipm, win module, and going to replace ecm soon van won’t start

[@Darenator1]

Great info to try! As others said, every other video is only if NO power. I have the situation that your have, power but won't read codes.

[@dcfgarage]

Let me know of it works

[@naruttaanime9471]

Yes, the power and ground wires were snug but the three comm ports were loose.

[@stevemanby357]

My Mazda 5 is suffering with these symptoms, will try this when the weather improves abit.

[@speakbigtruth9383]

Thank you. I’m having the same problem

[@Kenny-go2ff]

Finally found a video that was helpful.

[@dcfgarage]

Thanks!

[@ericswe00]

Okey, im gonna try this tomorrow. Looks promesing.

[@yummyumm5988]

Did it work

[@Jayhamilton1]

This guy videos are good

[@dcfgarage]

Thanks!

[@michaelmarquez6133]

Thank you!

[@lp839]

About to troubleshoot the obd2 port on this 05 f-650 fingers crossed

[@ynonser5804]

mine used to connect to torque app . but now it doesnt work.only in one specific app it does connect to ecu. which i can't explain why?? i've replace the ddapters . and both works fine with torque pro in another car. i guess there's something wrong with my obd port itself. i'll give atry though. thanks!!!

[@bigdogmobilemechanic1647]

very helpful and useful info thanks

[@dcfgarage]

Glad it was helpful!

[@MzoOo7]

Thank you for this video I have an OBD2. The blue piece, when I connect it to the slot, lights up red, but when I start searching for malfunctions, it does not respond and shows me a message that the piece has not connected to the computer, and I do not know what is wrong.

[@miguelayala2014]

I have a similar scanner and when I plug it in and press scan it’ll load and then it will just revert back to the main menu after it’s finished loading. I don’t get an error and failure to connect message. Battery is new, and the pins are fine. Any tips?? Thanks. Edit: I don’t currently have a CEL on however part of my cluster lights are burnt out so I don’t know if the CEL is on or off.

[@foreverbless5692]

Gonna try this tommarow and see how it holds up

[@thebackbenchersstudio7818]

How was it

[@Daybreaker16]

Will give this a shot and see

[@dcfgarage]

Hope it works!

[@Daybreaker16]

@@dcfgarage it did not

[@scottsherman5262]

​@TheBrownMAFIA Have you resolved this yet? I'm having this issue & it of course fails smog because it can't cnnect/link.

[@Daybreaker16]

@@scottsherman5262 yeah came to find out the ECU is bad

[@CashApp-HelpMeStayAlive]

​@@Daybreaker16 Hoe much is an ECU ? Im having same problem

[@drenico1]

have a similar issue on my 5yr old Tacoma. If I try to wiggle the harness while plugged into the obd2 scanner, it'll lose connection and the scanner screen will flicker. I'm going to try this.

[@jamesgallagher1992]

Same🤘

[@azrael771]

Thanks for the tip, I tried this on my 2000 AC30 Toyota Estima but still "trouble connecting" any ideas?

[@dcfgarage]

It could possibly br a bad ecu

[@azrael771]

@@dcfgarage what causes an ECU to go bad?

[@toxictube392n7]

I have a 2003 hummer H2, unknown driver, half the electronics don’t work. I have replaced the ECM and BCM both were programmed, relearned procedure done. I plug my cheap diagnostic tool in the OBD port. It gives me only the volts which are good and then it cannot communicate with the rest. Just asking your opinion before I take it to a shop, do you think it could be a wire in the OBD port. They seem to look good . The unknown driver is what the problem is .I can see you get so many questions on here, I have just worked on this for like six months and stuck. Sorry for the long thread, but if you can reply, thank you so much, Richard

[@azrael771]

@@toxictube392n7 i had my mate come over with the expensive scanner from his work and it read fine. Sometimes the cheap ones just don't like certain cars. Take to a pro for a proper scan, if they still can't connect at least it should be free

[@jonramirez2760]

@DCF Garage I noticed the trouble code on your scanner was P0741 and it's on a GM vehicle. What did you do for a fix on that code? I have a 2008 Chevrolet Colorado with that same code.

[@dcfgarage]

I believe that is likely a bad torque converter. There is a sensor that can also go bad, but normally it’s the TC

[@rcamacho100]

Excellent video dude, you save my life 🙂

[@dcfgarage]

That's awesome! Thanks!

[@jamesgallagher1992]

Brilliant video..mine has same problem🤘

[@dcfgarage]

Thanks!

[@SB-sg1zv]

I have a similar problem with my 98 cabrio. My scanner has power but even if the check engine light is on my scanner doesnt pick up codes

[@ntamichael9343]

Good job bruh❤

[@dcfgarage]

Thanks 🔥

[@shamaYahu8635]

Similar issues my 93 grand cherokee 4.0L but my gages don't work, starter cranks but the car does not start and the reader can't read the computer. I've checked the fuses and only the park/neutral position fuse was blown; and when I replaced it the issues still remain. I need help somebody

[@dcfgarage]

Then your ecu is likely toast. You can pay a mobile mechanic to diagnose for sure

[@briankennedy5578]

Every video I've found on obd2 not connecting has the same outcome. Very basic and of no help. Connector pin drag test was first thing I thought of. And huge problem with anything that has a connector. And there are the ones that find a blown fuse. That is eliminated when the scanner powers up. Got power. Got ground. Pins are tight. No data. Can bus voltages seem to be right, from what I can tell. But checking resistance between two canbus wires finds no continuity. Could be due to no access to get good connection. Not even sure what sort of system/network a 2000 xkr has. Can't find hardly any info about it. Go chasing after can bus likely has nothing to do with actual concern. Just need to get codes and read data

[@dcfgarage]

You'd need to pay someone to diagnose like Scanner Danner

[@MikeyBadabingBadaboom]

Needs a new battery.

[@briankennedy5578]

@@MikeyBadabingBadaboom No. Something has the CAN network functioning as a CANT network. Likely a bad module. Haven't had time to track it down. Slow process. And at the moment it's been moved down on the priority list, by a deer. Instead I'm shopping for a bumper cover, fender, and headlight.

[@moreoflife1112]

I had the same issue I couldn't believe it but what fixed it was disconnecting the battery terminals clamping them together and holding down the brake to discharge all the modules and reset them

[@justmyopinion8395]

@@moreoflife1112 Did that really work? I have a 1998 Toyota Tacoma 4x4. Can you give a little more detail? I’m having the same problem and the smog shop can’t complete the smog check for my new registration. The scanner will power up but won’t connect or communicate.

[@dcfgarage]

I bought Samcrac's $1500 Mercedes and I am fixing on he channel. Go check it out -> kzbin.info/www/bejne/qn_SdaGvfJaph8k

[@ashleyredden2201]

If obd won't communicate car wont start right ?

[@jerrymontalbano3222]

You didn't mention whether you had to disconnect the battery before fooling with the electronic parts (as in connector). Was a short possible when fooling with them?

[@dcfgarage]

No need to disconnect the battery for this.

[@naruttaanime9471]

Only need key out and to pull the cigarette lighter fuse under the hood which will kill the power just in case you touch 12v+ to a ground.

[@MikeJones-rk1un]

Vehicles will not pass inspection in NH with a "Check engine light". I'm wondering what the inspection station will do when they can't read a fault but the check engine light is on.

[@w.e.s.]

Take the cluster out put black tape over the leds put it back together problem solved

[@MikeJones-rk1un]

They will assume you disconnected or changed your battery to cancel the light and you will have to drive another 100 miles before they can check again.

[@johnnypena1083]

#16 is usually the problem

[@dcfgarage]

Thanks for the tip!

[@sagessaltwateraquariums8621]

I have issue like this on my car except when I hit the link button on my innova obd it just turns off. Works when I don't have my keys in the ignition but obviously it doesn't connect then.

[@dcfgarage]

Start with the basics. Make sure the pins are good… especially if it’s and old car. If that’s not the case, then your problem might be the ECM itself

[@foreverbless5692]

Got the same problem

[@JustMe-xv6kk]

Anyone have this problem with their 1996 Jeep Cherokee? Did this fix it? Even tried putting in a different computer and still same problem.

[@richardhough6291]

would this ground wire from the obd2 port affect my check engine light not coming on or should i look somewhere else

[@dcfgarage]

Not sure, sorry

[@OGcodDAD_NF]

2007 Honda civic. Powers obd2 but ultimately gives me message of link error this may be what’s wrong with it but I heard obd2 scanner could be garbage.

[@dcfgarage]

Unlikely, but could be. You can buy a $15 scanner at walmart to be sure

[@x.mallyg-apexlegendsmobile11]

I have a Cadillac deville 2005 says communication error pls help

[@eddieds312]

I wonder if GM offers a OBD pin repair or replacement kit Most Jap cars do not you have to buy a new harness.

[@dcfgarage]

Good point

[@jorgevaldes9512]

Great video great help thank you

[@dcfgarage]

Thanks!

[@jvst20051]

I tried this already and it didn't work on mine but the code reader does turn on and I get link error my car still just cranks no start

[@jvst20051]

My fix was the ecu

[@Benzo4prezi]

@@jvst20051 same hopefully

[@jvst20051]

@@Benzo4prezi it turned out to be my ecu .I replaced it and every works now

[@saltlifecastro]

I'm having the same problem on my 2010 Honda accord it's getting power but says error and also my key isn't showing when put to acc position can it be my ECU is bad?

[@noelperez4259]

@@saltlifecastro did you fix it Same car and same alo

[@Mitchlovejoy]

What happens if its a problem with the car computer?

[@dcfgarage]

Then you'll likely have to get a new one

[@cozyboyace3592]

Error display on mine help

[@peterbennetts]

Do you need to discanect battery

[@dcfgarage]

Not necessary. It will be hard to diagnose with it disconnected. If you do one wire at a time, there's no risk

[@MikeAnderson2858]

Mine say no link

[@dcfgarage]

Probably the same situation

[@skylertriplett8389]

Tried this now the car won't start

[@dcfgarage]

Did u fix it? What was it?

[@skylertriplett8389]

@@dcfgarage fix what the not starting?

[@michaeleverett2650]

​@@skylertriplett8389you must have touched some wires together and burned something out