Diagnostic Aids
WARNING: This page is about a different variant/trim than selected.
- The Intake Air Humidity sensor signal and the IAT sensor 2 signal are sent to the ECM on the same circuit. If the Intake Air Humidity parameter displays the value: 0% and there are also IAT sensor 2 DTCs, check for a circuit problem.
- With the ignition ON, the engine OFF; if the engine is cold, a properly functioning IAT sensor will gradually increase the corresponding scan tool IAT Sensor parameter. This is due to the heat that is generated by the humidity and MAF sensor heating elements.
- Skewed temperature sensors may cause this DTC to set.