Powertrain
generic / SAE
P04A7
Exhaust Pressure Control Valve B Position Sensor Circuit Range or Performance
Same as P04A6 with the signal in plausible range but not matching the actual valve angle.
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / number4 / A7
Possible causes
- Sensor element drifted or offset high
Inspection / repair
- Difficulty: medium
- DIY: possible
- Estimated cost: 150–500 €
- Estimated time: 0.8–2 h
- Component: exhaust pressure position sensor b
- MIL / check engine light
- emissions-relevant
Sources
References
sae:J2012