P0133
P0133Diagnosis 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
- --> Perform all short tests in sequence (without Tank tightness).
or
- Engine running > 2 Minute(s) , at:
- Engine at operating temperature
- All models: Oxygen sensor(s) ready for operation
- then steady driving > 10 Minute(s) , at:
- Engine speed < 800 ... 3,200 1/min
- Mass air flow 120 ... 520 mg/stroke
- without Overrun phase(s)
Possible fault causes
- Short circuit to B+/ground/between lines or open circuit in the lines
- Different air flow to the oxygen sensor behind the catalytic converter , at:
- Catalytic converter damaged
- modified or nongenuine components
- Oxygen sensor in front of catalytic converter Bank 1 Faulty (aged)