Excessive Time to Enter Closed Loop Fuel Timing Control
ECU took longer than allowed to enter closed-loop control of fuel injection timing. Often slow sensor warm-up.
Affected components
- Oxygen sensor
- Ect sensor
Common causes
- High likelihood: Sensor heater aging slows warm-up
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.