Case IH ATC117: Outside Air Sensor Open or Shorted to Power

The fault code indicates an issue with the outside air sensor, which is either open or shorted to power. This can affect the proper functioning of the system that relies on this sensor for operation.

1. 1

   The wiring and connections to the outside air sensor

2. 2

   The integrity of the outside air sensor itself

1. 1

   Inspect the wiring and connections

   Check for any damage, corrosion, or loose connections in the wiring and connectors related to the outside air sensor.

2. 2

   Test the outside air sensor

   Use a multimeter or diagnostic tool to test the sensor for proper resistance or voltage, following the service manual guidelines.