Intermediate System Voltage Low
The intermediate (DC-link) system voltage in the hybrid power electronics is below the expected window. Common in HEV/EV inverter circuits when the DC bus drops under load.
Affected components
- Dc link capacitor
- Hv battery
- Inverter
Common causes
- High likelihood: HV battery output low under load
- Medium likelihood: DC-link capacitor aged - increased ESR
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.