Hybrid/EV Battery Voltage Sense H Circuit Low
The BMS detects a circuit low fault on voltage sense channel H of the high-voltage battery. Cell-group voltage measurement is unreliable on this channel.
Affected components
- Hv battery voltage sense h
- Wiring harness
- Bms
Common causes
- High likelihood: Sense wire shorted to ground
- Medium likelihood: Open in sense wire
- Low likelihood: Connector pins corroded - high contact resistance
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.