Powertrain
generic / SAE
P2431
Secondary Air Injection System Air Flow/Pressure Sensor Circuit
The ECU detects a general fault in the secondary air injection system air flow or pressure sensor circuit. The diagnostic cannot verify proper SAI operation.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number4 / 31
Possible causes
- Defective SAI sensor high
- SAI sensor wiring fault medium
Inspection / repair
- Difficulty: medium
- DIY: possible
- Estimated cost: 120–500 €
- Estimated time: 0.5–2 h
- Component: sai pressure sensor
- Component: sai wiring
- MIL / check engine light
- emissions-relevant
- drive cycle required
Sources
References
sae:J2012