Battery Isolation/Voltage Stabilization Control Circuit High
The battery isolation/voltage stabilization module reports a control circuit high condition. Power supply quality during start/stop or load shedding is impaired.
Affected components
- Battery isolation module
- Wiring harness
- Ecm
Common causes
- High likelihood: Control wire shorted to B+
- Medium likelihood: Open module input
- Low likelihood: Connector pins corroded - high contact resistance
Diagnostic notes
- The malfunction indicator lamp may illuminate
- 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.