Powertrain
generic / SAE
P046A
Catalyst Temperature Sensor 1/2 Correlation (Bank 1)
Catalyst temperature sensors 1 and 2 on bank 1 disagree by more than the allowed tolerance over a drive cycle.
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / number4 / 6A
Possible causes
- One sensor drifts high
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: 60–600 €
- Estimated time: 0.5–2.5 h
- Component: exhaust temperature sensor
- MIL / check engine light
- emissions-relevant
Sources
References
sae:J2012