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DTC codes / P26xx · Computer and output circuits / P26D2

P26D2Engine Coolant Pump Control Module Over Temperature

P26D2 means the engine coolant pump control module has reported an internal over-temperature condition to the powertrain control module (PCM). The module is detecting that its own electronics or power stage are running hotter than the designed limit, which usually points to a failing module, a cooling problem around the module, or excessive current draw from the coolant 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.

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