OBD-II code · Powertrain (generic, extended)
P26FA Coolant Pump C Overspeed/Air in System
The third coolant pump speed feedback is higher than commanded with no resistance from coolant. Indicates air in the cooling loop or low coolant level so the pump spins free.
Is it safe to drive with P26FA?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyLow coolant level due to leak or improper fill
- PossibleAir pocket trapped in the cooling loop
Repair at a glance
- Difficulty
- Easy
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.3–2 h
- Emissions test
- Usually unaffected
- Parts involved
- Coolant Pump C, Cooling System, Coolant Reservoir
Related codes
- P2B65Coolant Pump B Overspeed/Air in System
- P2B6CCoolant Pump D Overspeed/Air in System
- P2B86Coolant Pump A Overspeed/Air in System
- P2DF7Coolant Pump E Overspeed/Air in System
- P26F7Coolant Pump C Supply Voltage Circuit
- P26F8Coolant Pump C Stuck/Stalled
- P26F9Coolant Pump C Control Module Overtemperature
- P26FBEGR Cooler Bypass Control Stuck Closed Bank 1
- P26FCEGR Cooler Bypass Control Stuck Closed Bank 2
- P26FDA/C Compressor Internal Control Module Performance
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.