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Code B1B71, evaporator temperature sensor location needed

Tiny
TONY VILEY
  • MEMBER
  • 2014 FORD FUSION
  • 2.0L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 35,500 MILES
I have code B1B71 (Circuit short to battery or Open) for my Evap temperature sensor. Having read around, one of the fixes I understand could be replacing the failed sensor. If I need to replace the Evap Temp Sensor, how do I access the sensor?
Wednesday, February 10th, 2021 AT 7:23 PM

3 Replies

Tiny
KASEKENNY
  • MECHANIC
  • 18,907 POSTS
This could be a sensor issue however, there are other possible causes namely wiring. We need to run through this testing because if you have to replace the sensor then you need to replace the entire HVAC housing as it is not serviced separately.

I attached the testing that we need to run through along with the replacement procedure if it proves to be the sensor.

Let us know what questions you have. Thanks
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Friday, February 12th, 2021 AT 4:46 PM
Tiny
9718030753
  • MEMBER
  • 1 POST
You do not need to replace the entire HVAC box just because a $20.00 sensor failed.
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Wednesday, August 10th, 2022 AT 12:40 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,513 POSTS
Did you read the #2 note from Ford? They say it is only serviced that way.
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Wednesday, August 10th, 2022 AT 12:41 PM

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