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2021 Ram 1500 Long Horn Ambient Air Temperature Sensor Replacement

Namwal

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Apr 5, 2023
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My ambient air temperature sensor was registering off the chart and then I had a check engine light come on. I took it to the dealer and they were going to charge me $1400 to replace the drivers side mirror where the sensor is located! My own research shows the removable panel on the mirror that gives you access to the sensor. I ordered a new sensor from MoPar for $14.00. Has anyone ever replaced their sensor or can you guide me to instructions for replacement on the 2021 Ram 1500? IMG-0830.jpg
 

theblet

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So this is the outside air temp sensor?
 

Medic2595

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Namwal.....Did this fix your problem? Just yesterday, my outside temperature was showing 111 degrees when I left work. It was actually 80 degrees outside. By the time I drove home (45 minutes), it was saying that it was 158 degrees outside! This morning, it was telling me that hit was 165 degrees outside! I'm thinking I may have to order one of these sensors and replace mine.
 

Medic2595

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And now this morning....I an error message showing "Stop/Start Unavailable. Service Stop/Start System". What's this about?????
 

philodog

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I broke the intake air sensor at the air box on my 2021 and got the expected P0113 code but I also got the Service Stop Start System symbol on my dash too. I'll know if they're related when I fix the sensor and will post back.
 

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