Powertrain
generic / SAE
P237C
Exhaust Heat Exchanger Bypass Valve A Control Circuit Open
Exhaust Heat Exchanger Bypass Valve A Control Circuit Open: the control circuit is open. Likely a broken wire, disconnected connector, or failed actuator.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number3 / 7C
Possible causes
- Open in harness or connector high
- Actuator solenoid or motor winding open medium
- Pin pushed back out of connector body low
Inspection / repair
- Difficulty: medium
- DIY: shop recommended
- Estimated cost: 200–700 €
- Estimated time: 1–2.5 h
- Component: exhaust heat exchanger
- Component: exhaust bypass valve a
- Component: exhaust heat recovery actuator
- MIL / check engine light
- emissions-relevant
Sources
References
sae:J2012