Powertrain
generic / SAE
P26AF
Engine Coolant Bypass Valve B Stuck/Open
The second coolant bypass valve is stuck in the open position. Coolant always bypasses the second radiator path.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number6 / AF
Possible causes
- Valve seized open by sediment high
- Broken return spring medium
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
Sources
References
sae:J2012