Where is the engine coolant temperature sensor located?

Tiny
BDESGM
  • MEMBER
  • 2009 SATURN AURA
  • 2.4L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 9,996 MILES
Received P0128 obdII code. Dec. 2023 installed new motor.
Saturday, October 5th, 2024 AT 10:09 AM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,536 POSTS
This could be a bad thermostat, stuck open all the time FYI.

The P0128 code on your 2009 Saturn Aura indicates that the engine coolant temperature is below the thermostat regulating temperature.

Here is the location of the engine coolant temperature sensor. Check out the images (below). Let us know how it goes.
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Saturday, October 5th, 2024 AT 2:52 PM

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