- Vacuum Leaks: The most common cause. Inspect hoses and gaskets for any signs of leaks.
- Thermostat Issues: A faulty thermostat can impact engine temperature, which in turn affects the air-fuel mixture. Consider checking and replacing if necessary.
- Dirty Mass Airflow (MAF) Sensor: A contaminated MAF sensor can give incorrect readings, leading to a lean mixture. Cleaning or replacing the sensor might be required.
- Fuel System Problems: Issues with fuel injectors or the fuel pump can also lead to this error code.
- Check Fuel Trims: Monitor the fuel trim at idle and then at 3000 RPM. If the trim improves at higher RPMs, it's likely a vacuum leak.
- Systematic Approach: Avoid randomly replacing parts. Follow a methodical diagnostic process or a repair manual for more detailed steps.
Please login or Register to submit your answer