What does code P2D3B mean?

Q: What does code P2D3B mean?

Hybrid/EV Discharge System Fault. P2D3B indicates that the vehicle's hybrid or electric vehicle (EV) high-voltage battery management system has detected a fault in the discharge circuit, meaning the pack cannot deliver power as commanded. The computer monitors voltage, current, and contactor status during discharge and sets this code when the actual discharge behavior deviates from the expected profile.

DTC codes / P2Dxx · Hybrid propulsion / P2D3B

P2D3BHybrid/EV Discharge System Fault

P2D3B indicates that the vehicle's hybrid or electric vehicle (EV) high-voltage battery management system has detected a fault in the discharge circuit, meaning the pack cannot deliver power as commanded. The computer monitors voltage, current, and contactor status during discharge and sets this code when the actual discharge behavior deviates from the expected profile.

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.