Air Assisted Injector Control Range/Performance
The air-assist injector control system (used on some lean-burn or direct-injection engines to atomize fuel with air) shows a performance deviation from the expected behavior.
Affected components
- Air assist valve
- Air supply
Common causes
- High likelihood: Air passage clogged with carbon
- Low likelihood: Sensor element aged beyond calibration window
- Low likelihood: Sensor mounting loose - signal damping
Diagnostic notes
- The malfunction indicator lamp may illuminate
- This code can affect emissions
- A drive cycle may be required after repair
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.