P0132moderate severityPowertrain
O2 Sensor Circuit High Voltage Bank 1 Sensor 1
on 2010 BMW M3 E90 4.0L V8 S65 · RWD
What this code means
The upstream O2 sensor voltage on Bank 1 is staying above 0.45V, indicating a rich condition or sensor fault.
Symptoms
- Check Engine Light
- Rich running
- Black exhaust smoke
- Poor fuel economy
Common causes
- Faulty O2 sensor
- Leaking fuel injector
- High fuel pressure
- EVAP purge valve stuck open
Diagnostic steps
- Monitor O2 sensor voltage
- Test fuel pressure
- Check for leaking injectors
- Inspect EVAP purge valve
Repair notes
Replace O2 sensor or fix rich-running cause.
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29CC
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Misfire Cylinder 2
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Misfire Cylinder 5
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Misfire Cylinder 6
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Misfire Cylinder 7
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