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DTC codes / P2Dxx · Hybrid propulsion / P2DB8

P2DB8Battery Charging System B High Voltage Interlock Circuit Performance

P2DB8 indicates that the battery charging system's high-voltage interlock loop, a safety circuit that confirms high-voltage connectors are properly seated, has failed a performance check on the 'B' circuit. The computer detected an abnormal voltage or signal behavior in the interlock circuit that does not match the expected pattern during self-test, often without any drivability complaint.

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.

Running on fumes Free guides aren't free to make. Top up the tank. Any amount, one time. Fuel the Garage