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DTC codes / P26xx · Computer and output circuits / P26CB

P26CBEngine Coolant Pump Performance/Stuck Off

P26CB means the engine control module (ECM) has commanded the engine coolant pump to run, but the pump's feedback signal indicates it is not turning or is stuck in the off position. The ECM monitors the pump's electrical circuit or speed signal and sets this code when the actual pump performance does not match the commanded state.

SystemPowertrain
Code typeGeneric (all makes)
SeverityHigh
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.

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