Powertrain
generic / SAE
P26B2
Engine Coolant Bypass Valve B Stuck Closed
The second coolant bypass valve is stuck closed.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number6 / B2
Possible causes
- Valve seized closed by debris high
- Actuator linkage jammed in closed position medium
- Carbon or debris buildup preventing free movement low
Inspection / repair
- Difficulty: medium
- DIY: possible
- Estimated cost: 80–600 €
- Estimated time: 0.5–2.5 h
- Component: coolant bypass valve b
- Component: thermostat housing
- MIL / check engine light
- emissions-relevant
Sources
References
sae:J2012