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Code P0456 reduce power engine

Tiny
CESARR0907
  • MEMBER
  • 2006 CHEVROLET COBALT
  • 2.2L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 135,000 MILES
My problem start when I changed the cigarette light fuse and after that give me the reduce power engine and the code p0456 the throttle body I change it and the pedal throttle sensor too. The problem continues. If some body knows how resolve that problem let me know because I do not know what to do please.
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Tuesday, June 2nd, 2020 AT 8:51 AM

1 Reply

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Good morning,

Did you verify any voltages from the throttle body to the pedal sensor?

I attached a wiring diagram for you to view. We need to do some basic voltage checks for this issue.

https://www.2carpros.com/articles/reduced-power-limp-mode

https://www.2carpros.com/articles/engine-has-low-power-output

I attached wiring diagrams of the throttle body and the pedal sensor. We need to verify the reference and signal voltages being sent to the ECM.

https://www.2carpros.com/articles/how-to-check-wiring

Roy

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Tuesday, June 2nd, 2020 AT 9:49 AM

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