Powertrain
generic / SAE
P0C76
Hybrid/EV Battery System Discharge Time Too Long
The HV battery system discharge time is longer than the calibrated window. Indicates high resistance, weak contactor, or aged components.
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / numberC / 76
Possible causes
- Increased resistance in path high
- Contactor coil weakening 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
- Estimated cost: 400–3000 €
- Estimated time: 2–10 h
- Component: hv battery system
- Component: discharge resistor
- Component: main contactors
- MIL / check engine light
- limp mode possible
Sources
References
sae:J2012