P0041
P0041Diagnostic information - DME (DFI)
Oxygen sensors behind catalytic converter interchanged
NOTE: Do not use contact spray on the oxygen sensor's plug connections as this will result in irreparable damage to the lines (blockage of reference air duct).
NOTE: Do not interchange the oxygen sensor ahead of catalytic converter with the sensor behind the catalytic converter as this will result in implausible fault entries.
NOTE:
During diagnostic procedures, the mixture on one bank is enriched, while the mixture on the other bank is weakened.
If the oxygen sensor behind the catalytic converter on the enriched bank indicates weakening and the oxygen sensor behind the catalytic converter on the weakened bank indicates enrichment, then this fault is entered.
Diagnostic conditions
- --> Perform all short tests in sequence (without Tank tightness).
or
- steady driving > 20 Minute(s), at:
- approx. 80 km/h
- in the highest gear
- Lambda control (Behind catalytic converter) Active
Possible fault causes
- Oxygen sensors behind catalytic converter interchanged (i.e. sensor of bank 1 is in exhaust branch of bank 2 and vice versa).