E39 M5 and E52 Z8 Discussion
Hello Everybody,
I write this post as my M5 e39 failed MOT yesterday due to emissions.
CO seems to be out of specs on all 3 Idle test.
I then checked fault codes with ISTA and found 2 interesting ones :
0004F : DME : Signal, exhaust-gas temperature sensor
000AA : DME : Secondary-air...