Hybrid/EV Battery Cell Balancing Circuit B Range/Performance
The cell balancing circuit B reports a range/performance condition. Cell-group voltage equalization may be impaired on this channel.
Affected components
- Hv battery cell balancing circuit b
- Bms
Common causes
- High likelihood: Balancing characteristic drifted
- Medium likelihood: High-resistance contact
- Low likelihood: Sensor element aged beyond calibration window
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
Related codes
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.