P2273
P2273Diagnosis information - DME (DFI)
Oxygen sensor behind catalytic converter, bank 2 - signal too lean / rich
Diagnostic conditions
- Perform short test [Oxygen sensor active test]
or (if no short test is possible):
- Relatively long drive in various operating states
- Diagnoses [Electrical fault of oxygen sensor behind catalytic converter] or [Lambda correction behind catalytic converter] must have taken place.
Possible fault causes
- Leak in exhaust system between the two oxygen sensors on bank 2
- Oxygen sensor behind catalytic converter, bank 2, faulty