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DTC codes / P2Bxx · Hybrid propulsion / P2BE2

P2BE2Hybrid/EV Battery Coolant Level Sensor Circuit Low

P2BE2 indicates that the hybrid or electric vehicle battery coolant level sensor circuit is reporting a low voltage condition, which the computer interprets as a low coolant level or a circuit fault. The powertrain control module (PCM) monitors this sensor to ensure the high-voltage battery pack is properly cooled, and it sets this code when the signal voltage falls below the expected threshold for a specified time.

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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