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.
Affected components
- Hv battery system
- Discharge resistor
- Main contactors
Common causes
- High likelihood: Increased resistance in path
- Medium likelihood: Contactor coil weakening
- Low likelihood: Pack cell imbalance approaching service threshold
Possible symptoms
- EV/hybrid system warning light on
- Reduced power output or limp mode
- Charging may fail or be slowed
- Reduced electric range
Diagnostic notes
- The malfunction indicator lamp may illuminate
- Reduced-power or limp mode may occur
Sources
Diagnostic information is provided for reference only. Confirm the code with a compatible scan tool and follow the vehicle manufacturer's service procedures before replacing components.