Cylinder 1 Injection Pulse Performance
The ECM detects that the injection pulse on cylinder 1 does not produce the expected combustion result. Pulse width, timing, or quantity drift compared to the bank average.
Affected components
- Fuel injector cyl 1
- Ecm
Common causes
- High likelihood: Injector aged - flow characteristic drifted
- Medium likelihood: Fuel quality affecting injection result
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.