Hybrid/EV Battery Cell Balancing Circuit A Stuck On
The cell balancing circuit A reports a stuck on condition. Cell-group voltage equalization may be impaired on this channel.
Affected components
- Hv battery cell balancing circuit a
- Bms
Common causes
- High likelihood: Balancing transistor stuck on
- Medium likelihood: Driver IC failure
- Low likelihood: Carbon or debris buildup preventing free movement
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.