DTC codes / P2Dxx · Hybrid propulsion / P2DB8
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.
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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