Fuel Injector Group A Supply Voltage Circuit High
The injector group A supply voltage exceeds the calibrated upper limit. Often a sign of a short to battery voltage on the supply line, an over-charging alternator or an internal driver failure.
Affected components
- Fuel injector
- Injector wiring
- Alternator
Common causes
- High likelihood: Wire shorted to battery voltage
- Low likelihood: Charging system overvoltage
- Low likelihood: Connector pins corroded - high contact resistance
Possible symptoms
- Check engine light on
- Misfire or rough idle on the affected cylinder
- Increased fuel consumption
- Possible fuel smell or smoke from exhaust
Diagnostic notes
- The malfunction indicator lamp may illuminate
- This code can affect emissions
- A drive cycle may be required after repair
- 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.