Powertrain
generic / SAE
P048C
Exhaust Pressure Control Valve A Position Sensor/Switch Circuit Range/Performance
Position sensor reads in range but plausibility check fails. Wiring faults of this kind typically come from chafing, water ingress at connector seals, or pin push-back — a wiggle test on the harness while the code is active often confirms the location.
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / number4 / 8C
Possible causes
- Sensor drift high
- Sensor element aged beyond calibration window low
- Sensor mounting loose - signal damping low
Inspection / repair
- Difficulty: medium
- DIY: shop recommended
- Estimated cost: 80–600 €
- Estimated time: 0.5–2.5 h
- Component: exhaust pressure regulator
- MIL / check engine light
- emissions-relevant
Sources
References
sae:J2012