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DTC codes / P0Exx · Hybrid propulsion / P0E16

P0E16Hybrid/EV Battery Pack Coolant Heater B Control Circuit/Open

P0E16 is a generic powertrain code indicating that the hybrid or electric vehicle battery pack coolant heater control circuit for channel B is open. The battery energy control module (BECM) or dedicated heater controller has detected an open circuit, meaning no current can flow through the heater element or its wiring when activation is commanded.

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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