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DTC codes / P2Dxx · Hybrid propulsion / P2D2C

P2D2CEngine Coolant Temperature Measurement System - Multiple Sensor Correlation

P2D2C indicates that the engine control module (ECM) has detected an implausible relationship between two or more engine coolant temperature (ECT) sensor signals, or between an ECT sensor and other temperature inputs such as cylinder head temperature or radiator outlet temperature. The ECM sets this code when the readings from these sensors do not correlate within an expected range during specific operating conditions, indicating a sensor, wiring, or rationality fault.

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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