OBD-II code · Powertrain (generic, extended)
P26C2 Engine Coolant Bypass Valve D Stuck Closed
The fourth coolant bypass valve is stuck closed.
Is it safe to drive with P26C2?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyValve seized closed by debris
- PossibleActuator linkage jammed in closed position
- Less likelyCarbon or debris buildup preventing free movement
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.5–2.5 h
- Emissions test
- Usually unaffected
- Parts involved
- Coolant Bypass Valve D, Thermostat Housing
Related codes
- P26B1Engine Coolant Bypass Valve A Stuck Closed
- P26B2Engine Coolant Bypass Valve B Stuck Closed
- P26BCEngine Coolant Bypass Valve C Stuck Closed
- P2E67Engine Coolant Bypass Valve E Stuck Closed
- P26BFEngine Coolant Bypass Valve D Control Circuit High
- P26C0Engine Coolant Bypass Valve D Stuck/Open
- P26C1Engine Coolant Bypass Valve D Range/Performance
- P26C3Internal Control Module Transmission Range Sensor Performance
- P26C4Internal Control Module Clutch Pedal Performance
- P26C5Exhaust Flow Control Valve A Control Circuit / Open
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.