P0157

P0157

Diagnosis information - Control unit DME (DFI)

Oxygen sensor behind catalytic converter Bank 2

NOTE:
Separated plug connection = open reference-air duct.
Damage to oxygen sensor.

- DO NOT use spray, grease, fluid or similar products on the oxygen sensor plug connections.

INFORMATION
- Do not interchange the oxygen sensor in front of the catalytic converter with the sensor behind the catalytic converter as this will result in implausible fault entries.
- The plugs themselves are coded and cannot be interchanged.

Diagnostic conditions
- Driving > 2 Minute(s) , at:
- Engine at operating temperature
- Mass air flow > 22.05 lb/h

- then > 30 Second(s) Idle speed

Possible fault causes
- Loose contact or corrosion on connectors or lines
- Short circuit to B+/ground or open circuit in the line
- Oxygen sensor behind catalytic converter Bank 2 Faulty