P0151 Diagnosis Information - DME (DFI)

P0151

Diagnosis Information - DME (DFI)

Oxygen sensor ahead of catalytic converter, bank 2

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).
- 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.

Diagnostic conditions
- Vehicle voltage > 9 V
- Engine idling > 3 seconds

Possible fault causes
- Open circuit
- Short circuit to B+
- Short circuit to ground
- Oxygen sensor ahead of catalytic converter bank 1 faulty