Fuel Injector Group B Supply Voltage Circuit/Open
The ECU detects an open or missing supply voltage on injector group B. The injectors on this bank cannot be energized, leading to misfire on the affected cylinders.
Affected components
- Fuel injector
- Injector supply relay
- Injector wiring
Common causes
- High likelihood: Blown injector group B fuse
- Medium likelihood: Faulty injector supply relay
- Low likelihood: Pin pushed back out of connector body
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.