Fuel Injection Quantity B Higher Than Expected
The measured fuel injection quantity for group B is above the calibrated window. Injector flow drift, rail pressure off, or measurement bias.
Affected components
- Fuel injector group b
- Fuel rail
- Ecm
Common causes
- High likelihood: Injector leaking
- Medium likelihood: Fuel rail pressure high
Diagnostic notes
- The malfunction indicator lamp may illuminate
- This code can affect emissions
- A drive cycle may be required after repair
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.