P2196

P2196

Diagnosis information - Control unit DME (DFI)

Oxygen sensor in front of catalytic converter Bank 1 - Signal too lean / too rich

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
- -->�Perform all short tests in sequence (without Tank tightness).
or
- Engine running 3 Minute(s) , at:
- without Overrun phase(s)
- All models: Oxygen sensor(s) ready for operation
- Lambda control Active
- Engine speed 640 ... 4,000 1/min
- Load 15 ... 70 %
- Catalytic converter temperature > 400 °C (°F)
- Mass air flow 10 ... 520 kg/h

- none of the following faults stored P2270, P2271, P0041

Possible fault causes
- Short circuit to B+/ground/between lines or open circuit in the lines
- Oxygen sensor in front of catalytic converter Bank 1 Faulty

Fault setting condition(s)
- The oxygen sensor signal deviates by a certain value from the control value (rich/lean mixture) within a certain time. (Abrupt large deviation)