P26F9
Coolant Pump C Control Module Overtemperature
The smart controller of the third coolant pump has reached over-temperature. Sustained high duty or insufficient cooling air flow around the pump electronics.
- Check engine light: Yes
- Emissions related: No
- Repair difficulty: medium
Common causes
Ordered by how often each turns out to be the cause.
- Sustained high duty cycle from cooling demandCommon
- Cooling air channel around pump blocked by debrisPossible
Parts involved
- Coolant Pump C Module
P26F9 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.