What does code P2DB7 mean?

DTC codes / P2Dxx · Hybrid propulsion / P2DB7

P2DB7Battery Charging System B High Voltage Interlock Circuit/Open

P2DB7 indicates that the battery charging system B has detected a high voltage interlock circuit fault, either an open circuit or a voltage reading outside the expected range. The powertrain control module (PCM) monitors this dedicated safety loop and sets the code when the signal does not match the commanded state, often disabling the high-voltage charging function to prevent hazard.

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.