Powertrain
generic / SAE
P2D39
Forced Hybrid/EV Battery Disconnect
The BMS has forced a disconnect of the high-voltage battery from the vehicle bus. Triggered by safety condition such as overcurrent, isolation fault, or thermal runaway.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / numberD / 39
Possible causes
- Safety event triggered disconnect high
- Isolation fault detected medium
- Pack cell imbalance approaching service threshold low
Symptoms
- EV/hybrid system warning light on
- Reduced power output or limp mode
- Charging may fail or be slowed
- Reduced electric range
Inspection / repair
- Difficulty: hard
- DIY: shop recommended
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References
sae:J2012