Powertrain Definition only Lights the check engine lamp

P26F9: Coolant Pump C Control Module Overtemperature

Standardized SAE J2012 code · P26xx — Computer and output circuits

What does P26F9 mean?

The smart controller of the third coolant pump has reached over-temperature. Sustained high duty or insufficient cooling air flow around the pump electronics.

The code tells you which monitor failed, not which part is broken. Test before replacing parts.

Common causes

  • High Sustained high duty cycle from cooling demand
  • Medium Cooling air channel around pump blocked by debris

Likelihood is a general estimate across vehicles; your make and model may differ.

Add your car to see reports of P26F9 on the same make and model first.

P26F9 in the community

Ask about P26F9

No one has posted about P26F9 yet

Share your vehicle, the tool you used and what you tested — the first thread helps everyone who searches for this code.

Describe your P26F9 problem