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DTC codes / P2Dxx · Hybrid propulsion / P2DF5

P2DF5Coolant Pump E Control Circuit Low

P2DF5 indicates that the engine control module has detected a low-voltage condition on the control circuit for the coolant pump labeled 'E', which is typically an auxiliary or secondary electric pump used for charge cooling or cabin heating. The circuit is grounded or shorted to a low-voltage source, causing the pump to receive insufficient voltage to operate correctly.

SystemPowertrain
Code typeGeneric (all makes)
SeverityMedium
Fix difficultyIntermediate
AreaHybrid propulsion

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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