DTC codes / P2Dxx · Hybrid propulsion / P2D27
P2D27 indicates that the powertrain control module (PCM) has detected a performance fault in the control circuit for coolant pump F, specifically that the pump is stuck off or not achieving the commanded flow. The PCM commands the pump on and monitors the circuit and/or pump feedback, and it sets this code when the expected current, voltage, or speed response is not seen within the calibrated time.
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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