What does code P26F5 mean?

Q: What does code P26F5 mean?

Coolant Pump C Control Circuit Low. P26F5 indicates that the powertrain control module (PCM) has detected a low-voltage condition on the control circuit for coolant pump C, which is an auxiliary electric pump used for charge-air cooling or battery thermal management. The PCM commands the pump on and monitors the circuit, and it sets this code when the voltage on the control wire stays below the expected threshold, indicating a short to ground, an open circuit, or a faulty pump.

DTC codes / P26xx · Computer and output circuits / P26F5

P26F5Coolant Pump C Control Circuit Low

P26F5 indicates that the powertrain control module (PCM) has detected a low-voltage condition on the control circuit for coolant pump C, which is an auxiliary electric pump used for charge-air cooling or battery thermal management. The PCM commands the pump on and monitors the circuit, and it sets this code when the voltage on the control wire stays below the expected threshold, indicating a short to ground, an open circuit, or a faulty pump.

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.