Generator Voltage Sense Circuit B High
The voltage sense circuit B for the generator reports a circuit b high condition. Generator output regulation may be impaired.
Affected components
- Generator b
- Wiring harness
- Ecm
Common causes
- High likelihood: Sense wire shorted to B+
- Medium likelihood: Generator regulator overvoltage
- Low likelihood: Pack cell imbalance approaching service threshold
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.