Ambient Air Sensor

[Bdallas]

24 eco boost, outside temp read up to 50 degrees off. Dealer is on 5th attempt to fix. Any thoughts?

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[Ozarkbeard]

Did they replace the thermometer at the front of the vehicle?

 

[Bdallas]

Did they replace the thermometer at the front of the vehicle?

They replaced a sensor up front, not sure what it's called. It required bumper removal. The last attemp was the heat/ air control module

 

[Glen Baker LLC]

24 eco boost, outside temp read up to 50 degrees off. Dealer is on 5th attempt to fix. Any thoughts?

They replaced a sensor up front, not sure what it's called. It required bumper removal. The last attemp was the heat/ air control module

"Bdallas" Bud,
Other than the the outside ambien air temperature showing 50° off.
Was it Above or Below ambient temp.?
Did you notice any other possible related problems?? Such as engine, climate control....???
Is the temperature always 50° off or does it happen sporadically?
There is a reason for the questions.
I just don't want to steer you towards a specific reply.

 

[HeyBales]

Only because I've seen this happen before in other systems, that support F and C.

Up to 50 F off. So not constant.

What was an actual reading though at some point?
And do you recall what the outdoor temp should have been at that point?
If you have truck - just get the current info:
Dash reading.
Actual outside.


Besides that - did they reset the calibration?
If Forscan Lite has it - I know their scanner does.

 

[22_Mich_Mav]

Mine did the same thing and dealer swapped out sensor under fender liner. Not only did it fix temp but my Mav started running better..bonus!

 

[Glen Baker LLC]

Mine did the same thing and dealer swapped out sensor under fender liner. Not only did it fix temp but my Mav started running better..bonus!

That's funny. I have a picture of my Buick Encore with that same temperature. The only thing is, it was actually 127° It was July in Death Valley.

 

[24_bob]

I had a similar experience. Try locating the connector behind the passenger side front wheel well. There's a connector mounted on the right side just behind the fabric wheel well cover.

Mine was full of water. Blow it out with compressed air and fill it with "bulb grease" to prevent future water intrusion affecting the temperature circuit.

In my case, I suspect the water was from undercarriage car wash and the adjustment holes I drilled for my fog lights. No issues since covering the holes with tape.

 

[HeyBales]

I had a similar experience. Try locating the connector behind the passenger side front wheel well. There's a connector mounted on the right side just behind the fabric wheel well cover.

Mine was full of water. Blow it out with compressed air and fill it with "bulb grease" to prevent future water intrusion affecting the temperature circuit.

In my case, I suspect the water was from undercarriage car wash and the adjustment holes I drilled for my fog lights. No issues since covering the holes with tape.

Already new sensor - same issue.

 

[24_bob]

Already new sensor - same issue.

For me it was not the sensor. Its a harness connection behind the passenger wheel well. Its fairly simple to get to it and check.

 

[HeyBales]

For me it was not the sensor. Its a harness connection behind the passenger wheel well. Its fairly simple to get to it and check.

Yes I caught that.

I was informing you the OP already got a new sensor, so suggestion to check the plug in his case probably not worth the hassle.

 

[22_Mich_Mav]

That's funny. I have a picture of my Buick Encore with that same temperature. The only thing is, it was actually 127° I was July in Death Valley.

It was 10 degrees out when I took mine.

 

[24_bob]

Yes I caught that.

I was informing you the OP already got a new sensor, so suggestion to check the plug in his case probably not worth the hassle.

The problem is water causing the signal to degrade inside the connector. The connector is separate from the sensor. In this case, the connector is inside the wheel well, about 3 feet from the actual sensor. I was surprised by the amount of water inside it and the green corrosion on the terminals. Sand paper, and a toothpick helped clean it up.

I thought the same thing when I had my issue, but hated the idea of the dealership taking apart the bumper for a sensor that was still sending a signal, albeit a wrong one.

 

[HeyBales]

The problem is water causing the signal to degrade inside the connector. The connector is separate from the sensor. In this case, the connector is inside the wheel well, about 3 feet from the actual sensor. I was surprised by the amount of water inside it and the green corrosion on the terminals. Sand paper, and a toothpick helped clean it up.

I thought the same thing when I had my issue, but hated the idea of the dealership taking apart the bumper for a sensor that was still sending a signal, albeit a wrong one.

Ahh - got it. True they may not have examined the wire side of connector, or just packed it full of di-electric grease.

 

[FischAutoTechGarten]

For me it was not the sensor. Its a harness connection behind the passenger wheel well. Its fairly simple to get to it and check.

Interesting, becuase mine will read completely off sometimes as well.

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