Powertrain
generic / SAE
P2573
Direct Ozone Reduction Catalyst Deterioration Sensor Circuit Range/Performance
The DOR deterioration sensor is electrically intact but its readings drift or do not match the model — for example a deterioration value that does not move with km/h driven, or moves implausibly fast.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number5 / 73
Possible causes
- Aged sensor with offset 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: shop recommended
- Estimated cost: 120–500 €
- Estimated time: 0.5–2 h
- Component: dor deterioration sensor
- MIL / check engine light
- emissions-relevant
Sources
References
sae:J2012