Powertrain
generic / SAE
P2D1B
Exhaust Flow Control Valve C Position Not Learned
The exhaust flow control valve C reports a position not learned condition. Exhaust routing for back-pressure or noise control on this branch cannot be commanded reliably.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / numberD / 1B
Possible causes
- Adaptation lost after battery disconnect high
- Valve replaced without learn procedure medium
Inspection / repair
- Difficulty: medium
- DIY: shop recommended
- Estimated cost: 200–1200 €
- Estimated time: 1–5 h
- Component: exhaust flow control valve c
- Component: wiring harness
- Component: ecm
- MIL / check engine light
- emissions-relevant
- limp mode possible
Sources
References
sae:J2012