What does code P26F7 mean?

Q: What does code P26F7 mean?

Coolant Pump C Supply Voltage Circuit. P26F7 indicates that the engine control module (ECM) has detected an abnormal voltage condition on the supply circuit for coolant pump 'C', which is an auxiliary electric pump used for charge-air cooling or battery thermal management on many modern vehicles. The ECM monitors the voltage on the pump's power feed and sets this code when the signal falls outside the expected range, typically indicating an open circuit, short to ground, or excessive current draw.

DTC codes / P26xx · Computer and output circuits / P26F7

P26F7Coolant Pump C Supply Voltage Circuit

P26F7 indicates that the engine control module (ECM) has detected an abnormal voltage condition on the supply circuit for coolant pump 'C', which is an auxiliary electric pump used for charge-air cooling or battery thermal management on many modern vehicles. The ECM monitors the voltage on the pump's power feed and sets this code when the signal falls outside the expected range, typically indicating an open circuit, short to ground, or excessive current draw.

SystemPowertrain

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyIntermediate

AreaComputer and output circuits

Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.