Hybrid/EV Battery Pack Coolant Pump B Control Circuit Driver Current/Temperature Too High
The output driver for hybrid/ev battery pack coolant pump b reports current or junction temperature above its protection threshold.
Affected components
- Hv battery pack coolant pump b
- Bms
Common causes
- High likelihood: Actuator stalled - high stall current
- Medium likelihood: Control wire shorted to ground
- 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
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.