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DTC codes / P2Bxx · Hybrid propulsion / P2BCE

P2BCEBattery Charging System Negative Contactor B Control Circuit/Open

P2BCE indicates that the battery charging system's negative contactor control circuit is open, meaning the powertrain control module (PCM) has detected an interruption in the electrical path that commands the negative-side contactor to close. This contactor is part of the high-voltage battery pack's safety system, and an open circuit prevents the PCM from properly controlling the connection between the battery's negative terminal and the rest of the high-voltage system.

SystemPowertrain
Code typeGeneric (all makes)
SeverityHigh
Fix difficultyProfessional
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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