P26CE
Engine Coolant Pump Overspeed/Air In System
The coolant pump speed feedback is higher than the commanded value with no resistance from coolant. Indicates air in the cooling loop or low coolant level so the pump spins free.
- Check engine light: Yes
- Emissions related: No
- Repair difficulty: easy
Common causes
Ordered by how often each turns out to be the cause.
- Low coolant level due to leak or improper fillCommon
- Air pocket trapped in the cooling loopPossible
Parts involved
- Engine Coolant Pump
- Cooling System
- Coolant Reservoir
P26CE is a generic OBD-II code defined by SAE J2012. Exact wording and diagnostic procedure vary by manufacturer and model. Code definitions are drawn from the public-domain OBDex dataset; the workshop notes are our own.