E46 Fanatics Forum banner
  • Hey everyone! Enter your ride HERE to be a part of this month's Ride of the Month Challenge!

1 - 5 of 5 Posts

the people’s mod
2004 330Ci 115k miles
15,963 Posts
First thing is to search about this code, either on this forum or just Google, and read up on what causes it and how to troubleshoot.
Most likely, the O2 sensor after cat on bank 2 (cyls 4-6) wiring has failed causing the O2 heater circuit not to function. Go inspect the sensor and its entire wiring harness from sensor to connector under the engine beauty cover.

FYI, just posting a screen shot of the code alone with no car details or anything will get you ignored.
We are here to help, but you have to supply the info and do all the work.
1 - 5 of 5 Posts