Injection Pump Fuel Calibration Not Learned
The injection pump fuel quantity calibration did not complete successfully. Without learned fuel calibration, AFR runs from default tables and emissions or smoke can rise.
Affected components
- Injection pump
- Control module
- Fuel quantity solenoid
Common causes
- High likelihood: Learning routine aborted by other DTC or unstable conditions
- Medium likelihood: Fuel quantity solenoid drift outside learning window
Diagnostic notes
- The malfunction indicator lamp may illuminate
- This code can affect emissions
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.