Battery Charger B Module Supply Voltage High
The supply voltage to battery charger B control module is high. Charger may not start or operate reliably.
Affected components
- Battery charger b control module
- Wiring harness
Common causes
- High likelihood: Alternator overvoltage
- Medium likelihood: Wire shorted to B+
Possible symptoms
- Charge status indicator shows fault
- Charging may not start or interrupts
- Slower-than-expected charge rate
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.