Internal Control Module Hybrid/EV Battery Monitor Performance
The hybrid control module detects an internal performance fault on the HV battery monitor processing. SOC/SOH calculations may be unreliable.
Affected components
- Hybrid control module
- Bms
Common causes
- High likelihood: Internal monitor processing fault
- Medium likelihood: Inconsistent data from sensor modules
- 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
- A drive cycle may be required after repair
- 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.