Temperature gauge showing negative?

Tiny
CREOLELADY
  • MEMBER
  • 2005 VOLKSWAGEN JETTA
  • 133,000 MILES
Starting my car, the notice is showing _9 degrees. Temperature outside is in the 35 degrees. Once driving the temperature granulates to the outside temperature. Why is this happening?
Saturday, December 10th, 2022 AT 12:24 PM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,874 POSTS
Hi,

Often times there is a weak connection at a sensor or module. On this vehicle, there is an ambient air temperature sensor that is located behind the lower grill in the front. See pic 1.

Here is what I suggest. Remove the lower grill, 2 screws at top, and inspect the wiring. Make sure the connector is tight, clean, and free of any damage. If it checks good, chances are the sensor is bad.

Pic 2 below shows what I believe the replacement part to be. Just confirm it with the seller.

Let me know if this helps or if you have other questions.

Take care,

joe

See pics below.
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Saturday, December 10th, 2022 AT 2:22 PM

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