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Code P2127?

Tiny
WILLIEJAQUAN
  • MEMBER
  • 2009 CHEVROLET IMPALA
  • 3.5L
  • 5 CYL
  • 2WD
  • AUTOMATIC
  • 100,000 MILES
I keep getting code P2127: Throttle/Pedal Position Sensor/Switch “E” Circuit Low. This started off as an "engine power reduced" message maybe every 4-6 months but it always went away after restarting the car, until it didn't.

At this point I've cleaned inside the throttle body, and I've gotten a new gas pedal. Nothing is helping.

At the moment I'm not even getting a code on my reader.

I have an idea to simply unplug the 2nd air check valve sensor, but I can't find it.

Can anyone help me find the sensor or should I just replace the throttle body?

Any suggestions are welcomed.
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Wednesday, September 6th, 2023 AT 7:07 AM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,513 POSTS
If you have replaced the accelerator pedal with sensor then I would replace the throttle body, cleaning it will not help. Here is how to change the throttle body out correctly and I have included the accelerator pedal as well to make sure we are on the same page. Check out the images (below). Please let us know how it goes.
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Wednesday, September 6th, 2023 AT 12:43 PM

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