Powertrain
generic / SAE
P2576
Direct Ozone Reduction Catalyst Deterioration Sensor Circuit Intermittent/Erratic
The DOR deterioration sensor signal jumps or drops out — typically loose connectors or chafed wiring near the radiator.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number5 / 76
Possible causes
- Loose connector high
- Connector with intermittent contact under vibration low
- Harness routed against vibrating component 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: 60–300 €
- Estimated time: 0.3–1 h
- Component: dor deterioration sensor
- Component: sensor wiring
- MIL / check engine light
- emissions-relevant
Sources
References
sae:J2012