Powertrain
generic / SAE
P2B97
Exhaust Pressure Control Valve A Position Exceeded Learning Limit
The required adaptation offset for the exhaust pressure control valve A position exceeds the calibrated learning window. Mechanical wear or sensor drift beyond compensation.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / numberB / 97
Possible causes
- Valve mechanism worn at end-stops high
- Position sensor reference drifted medium
Inspection / repair
- Difficulty: hard
- DIY: shop recommended
- Estimated cost: 300–1500 €
- Estimated time: 2–6 h
- Component: exhaust pressure control valve a
- Component: exhaust pressure valve position sensor
- MIL / check engine light
- emissions-relevant
- limp mode possible
Sources
References
sae:J2012