Diagnostic Aids
WARNING: This page is about a different variant/trim than selected.
- The Intake Air Humidity sensor and the IAT sensor 2 signals 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 2 will gradually increase the scan tool IAT Sensor 2 parameter. This is due to the heat that is generated by the Humidity Sensor heating element.