Humidity Sensor Diagnostic Code P1009

arvindram11 said:

Thank you! What do the numbers in your diagram correspond to? Is that the order in which the cover needs to be removed or something else? Happy Thanksgiving!

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1. Disconnect and isolate the negative battery cable. If equipped with an Intelligent Battery Sensor (IBS), disconnect the IBS connector first before disconnecting the negative battery cable.
   
   

   CAUTION: ​

   Use care when removing the humidity sensor cover. The humidity sensor bracket cannot be serviced separately from the windshield. If the sensor bracket becomes damaged, the windshield will need to be replaced. ​

   
   
   
2. (Cover removal - refer to Figure 1.) Carefully disengage the four retaining tabs (2 and 4) that secure the cover (3) to the humidity sensor bracket (1) by pressing in on the right side of the cover, while rocking the left side of the cover off the bracket.
   
   
   Figure 1​
   
   
   

   CAUTION: ​

   Use care when removing the humidity sensor. The humidity sensor bracket cannot be serviced separately from the windshield. If the sensor bracket becomes damaged, the windshield will need to be replaced. ​

   
   
   
3. (Humidity sensor removal - refer to Figure 2.) Using a small screwdriver or similar tool, carefully disengage the metal retaining clip (3) from the sensor bracket (2) and remove the humidity sensor (4) and the clip as an assembly.
4. Disconnect the wire harness connector (1) from the humidity sensor.
5. If the humidity sensor bracket is damaged and cannot be reused, replace the windshield.
   
   Figure 2
   
   
   

1. (Humidity sensor installation - refer to Figure 2.) If the humidity sensor bracket (1) is damaged and cannot be reused, install a new windshield.
2. Connect the wire harness connector (1) to the humidity sensor (4).
   
   

   CAUTION: ​

   Use care when installing the humidity sensor. The humidity sensor bracket cannot be serviced separately from the windshield. If the sensor bracket becomes damaged, the windshield will need to be replaced. ​

   
   
   
3. Position the humidity sensor to the sensor bracket (2) and engage the metal retaining clip (3) to the bracket. Make sure both sides of the retaining clip are fully engaged to the bracket.
   
   

   CAUTION: ​

   Use care when install the humidity sensor cover. The humidity sensor bracket cannot be serviced separately from the windshield. If the sensor bracket becomes damaged, the windshield will need to be replaced. ​

   
   
   
4. (Cover installation - refer to Figure 1.) Carefully install the humidity sensor cover (3) onto the sensor bracket (1). Make sure the four retaining tabs (2 and 4) are fully engaged to the bracket.
5. Connect the negative battery cable. If equipped with an Intelligent Battery Sensor (IBS), connect the IBS connector to the negative battery cable.