Error Code Reference: Find & Understand Error Codes

Translated on 21-10-2026, 10:26.

Hello,

Can anyone tell me where I can find a reference guide that explains the "error codes" when reading data via OBD2?

habe bei meinem T4 in der Climatronic den Fehler 01273 sporadisch ......nur was könnte es sein? Relais140?

I would be very grateful for an overview.

Martin.

Translated on 21-10-2026, 10:27.

Hello Martin,

You should try using the search function, for example, with *1273*

.
/viewtopic.php?t=2029&highlight=%2A1273%2A

Even if the issue doesn't perfectly match your vehicle, the error code 'Fresh air blower V2 - Control difference' indicates...

A complete list of error codes will not be provided here, as that would be unfair to our customers who have registered VAG-COM, as they already receive all those messages through that system.

Best regards, Rainer.

Translated on 21-10-2026, 10:28.

Hello Rainer,

Thank you for the information. However, I did some more searching online last night and found several websites where all the error codes are clearly explained. It's a nice set of documents, and it will be useful for the future.

My problem seems to be related to the blower, which indicates a potential issue with relays 140. In the worst case, it could be the blower itself... it could also be a broken wire.

Martin.

Translated on 21-10-2026, 10:29.

For those who want to know...

http://audi100.selbst-doku.de/Main/VAG-COM-Fehlernummern

Martin.