DTC codes / P2Dxx · Hybrid propulsion / P2DF5
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.
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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