OBD2 Port Not Working or Communicating with Scanner - Fix It Yourself!

[@Eli_is_a_Lauver]

Excellent information 👌 👏. Thank you very much!!!!

[@3209-f4h]

I have a Cousin with a 05 VW Passat 1.8T with Communications issues… I’ll try that when I get to SD next month! Thank you, Sir!

[@gargar2914]

so easy to understand thanks

[@HMVideofilms]

I would like to thank you for creating this video in which pellucidly you explain the workings (or lack )of the OBD II and power potential causes for fault errors. This has helped me tremendously especially with the pin diagram and highlighting that the potential fault culprit could be the control module. I recently noticed the amber engine light coming on so bought an OBD-II scanner (Topdon Topscan pro) it set up ok and did an initial scan on my 2016 Corsa E with errors P0171 + U0401 +U0077 which pointed towards my Evap valve, the problem is I wanted to double check the codes and see if I could run a live scan but when I tried to pair I kept getting 'couldn't connect, check Bluetooth connection, eventually getting the connection but then when I try to scan it only gives me 3 options where the first time it gave me around 40? The connector light turns red when connected and I can now eventually get Bluetooth to work, but as I said in scanning I'm only getting a couple of options and its not giving me any information. In your opinion is this the fault of the OBD-II scanner or the OBD port/faulty controller module? I have subscribed hoping to see and learn more. Kind regards. Hugh

[@cdizz7782]

I have power on obd2 scanner however it says no communication or unable to link.. any suggestions? 2006 Silverado

[@MrMugenwii]

did u figure it out. like my comment so i can see response. thanks!

[@cdizz7782]

@@MrMugenwii no I haven't really tried though. I'm thinking it could be a bad ground but I don't know for sure especially because I have power just no communication. I would assume that no ground would lead to no power. I have checked the connector all the openings are tight so it not a lose connection either. I guess it's a common problem let me know if you come up with anything.

[@jonnilynnsavard6789]

Did you end up finding the issue? I have power to mine but no communication as well. I’m thinking it’s the ECU

[@asaphector]

@@jonnilynnsavard6789 yeah sounds like ecu did you replace it ?

[@edogblaze7219]

Yes my OBD port doesn't work on my Mercedes a180 2014. I'm starting to think that that it might be the battery .I don't know how low it goes before it shuts you out of all operations on the ignition and ESL and ignition barrel no response..with a new battery it might jump in to life hey???great video

[@hotshotgarage271]

I have power going to everything but my scanner tells me there’s no information or it’s not connected any tips?

[@Waynetoosaucey]

12v wire fault, check the fuse for power, if it was it.

[@justmyopinion8395]

Im having the same issue with power and no connection and I watched every video available on YT. Every video is saying check to voltage and fuse. However if it’s the voltage or fuse why does the scanner still power up?

[@e3xPnico21]

Same issue here

[@yxilly]

Any luck? I got the same problem

[@itsonlyafl3shwound]

Because we all got ripped off and bought a crappy scanner. Our vehicles are fine it's the youcanic scanner that doesn't work and gives us all the same message. Absolute waste of money.

[@bahaalsakkaf7853]

My car is Tucson 2007 and the protocol is ISO14230-4 kwp fast, when I select car protocol manually stell can't get any live data on torque app, even though I can read car error codes normally, any tips to solve my problem?

[@corrysmith]

I had an Ignition Interlock Device from Intoxalock installed on my vehicle several years ago, it has since been removed, but I can no longer access my OBD2 port.

[@gregorykowalski6832]

2000 f250 fuse was replaced scanner powers up but cant pull data

[@AUTOSARTID]

When you buzz pin no 4 & 5 where's should i put negative on multi tester. Cz when i clamp on body shell there's no beep.

[@Dr.Stacker]

Scratch off some of the paint and primer, and try again.

[@AUTOSARTID]

@@Dr.Stacker got it thanks!

[@paho188_iron_phill4]

i can connect to my engine with scaner but cant connect to central elec. i have no power on can low/high or K line V is jumping betwen 0.5V and 3V resistor is 60ohm

[@joshuaturner-qe6rk]

My obd2 port is only reading 3 volts why??

[@ولدزايد-ذ2غ]

How make obd car port fast tester because one time i test 1990 nissan patrol swap with lumina v8 engine but all OBD wires was wrong and my expensive scantol makes smoke 😢 so my advice dont use scantol before test obd all pin powers and ask car owners is the engine swaped

[@YOUCANIC]

Thanks for reaching out and sharing your advice! We at Youcanic aim to empower car owners with resources such as guides, our powerful Youcanic scanner and even factory repair manuals to tackle such issues. This ensures you're confident and safe when doing car maintenance. Visit us at www.youcanic.com for any assistance or information. We're here to support you on your car ownership journey!

[@anthonmyl]

Grazie!!!

[@sparkyuiop]

That doesn't help if you have power but no communication.

[@GFXWard]

Exactly that's my issue and I can find an answer.

[@jeyTv1431]

how

[@itsonlyafl3shwound]

Waste of money. Works on diagnostic but when you go to maintenance to try and reset/ fix any codes it just says no communication. Seems like many people get this. It's not your car it's the junk scanner. Go elsewhere don't waste your money.

[@YOUCANIC]

We appreciate your feedback. At YOUCANIC, we're dedicated to helping car owners diagnose and repair their vehicles confidently. We provide an array of resources, including our YOUCANIC Full System Scanner, which is engineered to diagnose car issues comprehensively. You can learn more here: www.youcanic.com/scanner If you're facing communication issues when resetting codes, we recommend you to ask questions on our platform for assistance: www.youcanic.com. Your trust in YOUCANIC is greatly valued - we're here to make car repairs accessible and understandable for you.

[@mrashad219]

My stabilitrack light comes on when I hook up diagnostic tool to the OBD 2