Inlet air mass flow temp, short circuit to ground
▶ How to fix
Check the connectors and wiring. Measure the resistance in Inlet air temperature sensor. The resistance shall be around 2.5kO at 20º C. Measure voltage at pin A7_6, the voltage shall be around 5V with sensor disconnected.
What you'll see
No driver-visible symptom recorded.
System reaction
A calculated temperature value will be used. Engine performance might be affected.
Diagnostic depth
Detection
The voltage has been too low. T202, T126 or T4000.
Possible cause
Short circuit to ground. T202, T126 or T4000.