Battery Monitor Module Temperature Too High
The battery monitor module measures battery temperature above the safe upper threshold - charging is derated or stopped to prevent thermal runaway. Causes are heat soak from a hot engine bay, hard charging on a depleted battery, or a faulty sensor.
Affected components
- Battery monitor module
- Battery thermal management
Common causes
- High likelihood: Heat soak from engine bay
Diagnostic notes
- The malfunction indicator lamp may illuminate
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.