Air temperature sensor ( T126 / T4000 )
▶ How to fix
Check the air inlet temperature sensor, its connectors and wiring. Note Always perform a reset of the adaption values of the mass air flow sensor if the mass air flow sensor is replaced, or if a leak in the air intake system have been fixed
What you'll see
No driver-visible symptom recorded.
System reaction
Engine performance might be affected.
Diagnostic depth
Detection
The voltage in the circuit has been lower than allowed
Possible cause
Short circuit to ground.( T126 / T4000 )