Powertrain
generic / SAE
P043B
Catalyst Temperature Sensor Circuit Range/Performance (Bank 2 Sensor 2)
Catalyst temperature sensor at bank 2 sensor 2 reads in range but plausibility check fails — slow response or stuck reading.
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / number4 / 3B
Possible causes
- Sensor drift high
- Sensor element aged beyond calibration window low
- Sensor mounting loose - signal damping low
Symptoms
- Check engine light on
- Failed emissions inspection
- Possibly slightly increased fuel consumption
- Sulfur (rotten egg) smell from exhaust under load
Inspection / repair
- Difficulty: medium
- DIY: possible
- Estimated cost: 60–500 €
- Estimated time: 0.5–2.5 h
- Component: exhaust temperature sensor
- MIL / check engine light
- emissions-relevant
Sources
References
sae:J2012