Charge air temperature sensor T121
â–¶ How to fix
Check the charge air temperature sensor connectors and electrical cables.Measure the resistance of the sensor. The resistance should be approximately 2.5 kohm at 20°C.
What you'll see
No driver-visible symptom recorded.
System reaction
No system-reaction text recorded.
Diagnostic depth
Detection
Fault in the charge air temperature sensor.
Possible cause
Short circuit to battery voltage (U30) or open circuit.