Intake air system
â–¶ How to fix
- Chekc HFM Sensor - Check manifold pressure sensor - Renew HFM Sensor - Renew manifold pressure sensor
What you'll see
No driver-visible symptom recorded.
System reaction
- Vehicle starts and runs bad - Vehicle has higher emissions
Diagnostic depth
Detection
- Factor of air mass flow by throttle valve and by main charge sensor above threshold
Possible cause
- Sensors for air flow measurement are damaged