OBD2 Port Doesn't Communicate, But Has Power: Decoding the OBD2 Port Mystery

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/ @dcfgarage
Is your OBD2 port powering up but not connecting? Don't worry, we've got you covered! In this video, we'll decode the mystery of the OBD2 port and give you some troubleshooting tips to get your car's diagnostic system up and running. Don't let a simple issue prevent you from accessing important information about your vehicle's health. This video also applies to:
- OBD2 port does not work
- OBD2 port not communicating
- HOW TO FIX NOT WORKING OBD PORT
Disclaimer
The information contained in this video is provided "as is", and should be used for directional purposes. Always follow safety procedures and understand the legal implications of any modifications you might make to your vehicle. Several factors beyond my control might change the information provided in this video. I do my best to provide the most accurate and complete information possible, however, I shall not take any liability for property damage and injury occurred as a result of any information contained in this video. Use it at your own risk. No information contained in this video shall create any implied or expressed warranty, or liability.

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Опубликовано:

12 апр 2021

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Комментарии : 103

@dcfgarage 4 месяца назад

I bought Samcrac's $1500 Mercedes and I am fixing on he channel. Go check it out -> ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-tNoDnyG1vQg.html

@BigAl1381 Год назад

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

@Kyle-ev4fk 2 года назад

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

@bigdogmobilemechanic1647 Год назад

very helpful and useful info thanks

@dcfgarage Год назад

Glad it was helpful!

@michaelmarquez6133 Год назад

Thank you!

@guybates1192 Год назад

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

@dcfgarage Год назад

Awesome!

@lobokurt4922 7 месяцев назад

Is it ok to spary without disconnet battery?

@speakbigtruth9383 9 месяцев назад

Thank you. I’m having the same problem

@Kenny-go2ff 8 месяцев назад

Finally found a video that was helpful.

@dcfgarage 8 месяцев назад

Thanks!

@stevemanby357 3 месяца назад

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

@ntamichael9343 2 месяца назад

Good job bruh❤

@dcfgarage 2 месяца назад

Thanks 🔥

@JustMe-xv6kk 3 месяца назад

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!

@lp839 Год назад

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

@jamesgallagher1992 Год назад

Brilliant video..mine has same problem🤘

@dcfgarage Год назад

Thanks!

@rcamacho100 Месяц назад

Excellent video dude, you save my life 🙂

@dcfgarage Месяц назад

That's awesome! Thanks!

@samrodian919 2 года назад

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

@patdemers4229 10 месяцев назад

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.

@Jayhamilton1 8 месяцев назад

This guy videos are good

@dcfgarage 8 месяцев назад

Thanks!

@ramongalavis3328 10 месяцев назад

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 9 месяцев назад

Thanks for the info

@user-uf7oq8st5n 7 месяцев назад

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 Год назад

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 Год назад

Let me know of it works

@naruttaanime9471 5 месяцев назад

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

@jonramirez2760 2 года назад

@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 2 года назад

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

@ynonser5804 2 года назад

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!!!

@jorgevaldes9512 Год назад

Great video great help thank you

@dcfgarage Год назад

Thanks!

@miguelayala2014 6 месяцев назад

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.

@SB-sg1zv Год назад

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

@ericswe00 2 года назад

Okey, im gonna try this tomorrow. Looks promesing.

@yummyumm5988 9 месяцев назад

Did it work

@MzoOo7 7 месяцев назад

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.

@richardhough6291 Год назад

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

@dcfgarage 11 месяцев назад

Not sure, sorry

@johnnypena1083 Год назад

#16 is usually the problem

@dcfgarage 11 месяцев назад

Thanks for the tip!

@TheBrownMAFIA 4 месяца назад

Will give this a shot and see

@dcfgarage 4 месяца назад

Hope it works!

@TheBrownMAFIA 4 месяца назад

@@dcfgarage it did not

@scottsherman5262 4 месяца назад

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

@TheBrownMAFIA 4 месяца назад

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

@foreverbless5692 2 года назад

Got the same problem

@foreverbless5692 2 года назад

Gonna try this tommarow and see how it holds up

@thebackbenchersstudio7818 7 месяцев назад

How was it

@drenico1 2 года назад

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 Год назад

Same🤘

@shamaYahu8635 Год назад

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 Год назад

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

@jerrymontalbano3222 Год назад

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 Год назад

No need to disconnect the battery for this.

@naruttaanime9471 5 месяцев назад

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.

@briankennedy5578 10 месяцев назад

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 9 месяцев назад

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

@MikeyBadabingBadaboom 8 месяцев назад

Needs a new battery.

@briankennedy5578 8 месяцев назад

@@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 6 месяцев назад

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 5 месяцев назад

@@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.

@JustMe-xv6kk 3 месяца назад

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

@eddieds312 Год назад

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 11 месяцев назад

Good point

@OGcodDAD_NF Год назад

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 Год назад

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

@MikeJones-rk1un Год назад

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. Год назад

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

@MikeJones-rk1un 11 месяцев назад

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.

@sagessaltwateraquariums8621 2 года назад

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 2 года назад

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

@cozyboyace3592 7 месяцев назад

Error display on mine help

@Mitchlovejoy 10 месяцев назад

What happens if its a problem with the car computer?

@dcfgarage 9 месяцев назад

Then you'll likely have to get a new one

@peterbennetts 11 месяцев назад

Do you need to discanect battery

@dcfgarage 11 месяцев назад

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

@jvst20051 2 года назад

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 2 года назад

My fix was the ecu

@Benzo4prezi Год назад

@@jvst20051 same hopefully

@jvst20051 Год назад

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

@saltlifecastro Год назад

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?