P2297

P2297

Diagnosis information - Control unit DME (DFI)

Oxygen sensor in front of catalytic converter Bank 1 , Dynamism

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 , at:
- Exhaust gas temperature > 200 °C (°F)
- Overrun phase(s) > 8 Second(s)

Overrun phase(s) > 8 Second(s)
- Unintentional fuel supply, e.g. due to:
- dripping fuel injector
- high fuel content in engine oil
- large quantity of evaporating engine oil

- Short circuit to B+/ground/between lines or open circuit in the lines
- Oxygen sensor in front of catalytic converter Bank 1 Faulty (aged)