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Engine power reduced P2138

Tiny
BADDAWG
  • MEMBER
  • 2008 SATURN AURA
  • 3.5L
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 115,000 MILES
My check engine light came on and I ran the codes - engine power reduced p2138?
Sunday, February 9th, 2014 AT 5:15 PM

9 Replies

Tiny
SATURNTECH9
  • MECHANIC
  • 30,869 POSTS
Hello,

This happens when the car goes into limp mode due to the throttle bore being dirty. Here is a guide to help you fix the problems.

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

Please let us know if you need anything else to get the problem fixed.
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Sunday, February 9th, 2014 AT 7:16 PM
Tiny
MSFONDAY
  • MEMBER
  • 2 POSTS
  • 2007 SATURN AURA
  • 4 CYL
  • FWD
  • AUTOMATIC
What would cause reduced engine power read out?
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Tuesday, February 19th, 2019 AT 6:28 PM (Merged)
Tiny
PROTECH1980
  • MEMBER
  • 901 POSTS
You are going to have to get the vehicle scanned to retrieve the trouble codes that are stored in the computer, that will be the starting point for diagnoses.
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Tuesday, February 19th, 2019 AT 6:28 PM (Merged)
Tiny
MSFONDAY
  • MEMBER
  • 2 POSTS
The scan was negative
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Tuesday, February 19th, 2019 AT 6:28 PM (Merged)
Tiny
WATT
  • MEMBER
  • 1 POST
  • 2007 SATURN AURA
  • 3.6L
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 70,200 MILES
Left key in car in the on position. Drained the batter. When I boosted it off the reduced power light came on. When I turned it of after running for a while it still did not crank. I boosted again with the same problem. Help
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Tuesday, February 19th, 2019 AT 6:28 PM (Merged)
Tiny
SATURNTECH9
  • MECHANIC
  • 30,869 POSTS
So have you had the battery and alternator tested yet?
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Tuesday, February 19th, 2019 AT 6:28 PM (Merged)
Tiny
SUEMASUGA
  • MEMBER
  • 1 POST
  • 2007 SATURN AURA
  • 47,000 MILES
Happened in 1 sec. Started the car up and all the warning lights came on, what causes this?
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Tuesday, February 19th, 2019 AT 6:28 PM (Merged)
Tiny
SATURNTECH9
  • MECHANIC
  • 30,869 POSTS
You need to get your car scanned for codes let me know the exact code numbers not code descriptions you have. Sounds like an issue with the throttle by wire system.
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Tuesday, February 19th, 2019 AT 6:28 PM (Merged)
Tiny
SHANNON_PRIV
  • MEMBER
  • 1 POST
Thank you for this post I had this problem cleaning the throttle bore fixed it :) I love this site.
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Tuesday, February 19th, 2019 AT 6:29 PM

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