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Humidity Sensor Diagnostic Code P1009

3874 Views 22 Replies 4 Participants Last post by  arvindram11
So my 2017 Touring L Plus with Advanced SafetyTec which has about 24,000 miles recently started blowing hot air occasionally. Took it to the dealership and they got an active code when they ran diagnostics - P1009 (humidity sensor). Turns out this will cost me about $480 to have the dealer replace the humidity sensor. They are apparently back ordered and it will take them about a month to get it.

Has anyone here successfully replaced it themselves? I couldn’t find a YouTube video specifically for the Pacifica showing the location and the replacement. I assume it is one of the sensors that is mounted on the front windshield. I found some videos for the 300 and for Dodge Charger that appear to be similar issues when searching on google.

Trying to see under which cover it would be and how to open said cover without breaking it. Ha ha.
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Ugh. Hope not. But I wouldn't be surprised at this point. Did you notice anything leaking under the car when it was parked when this happened? Our van is normally in the garage and I haven't noticed anything odd on the floor.
No, the AC refrigerant is a gas so you wouldn't notice a leak
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No, the AC refrigerant is a gas so you won't see a leak.
To update the thread - ended up being a bad compressor - cost about $1200 after all said and done.
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