Air flow sensor
â–¶ How to fix
- Check HFM sensor lines - Check plug and socket connection on HFM sensor - Renew HFM sensor
What you'll see
No driver-visible symptom recorded.
System reaction
- Engine runs and starts bad - Vehicle stutter on drive - Missfire might occur - Torque is limited
Diagnostic depth
Detection
- period for mass flow from HFM is not plausible - tpmshfm_w < TPMSHFMN
Possible cause
- Wires, connectors or HFM sensor has been damaged