Reduced Engine Power Warning And Check Engine Light

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18 Responses

  1. harlinwolf says:

    My s-10 pulls while accelerating..changed fuel filter but still does it. what else could it be?

    • Frankie says:

      A fuel filter would have nothing to do with the truck pulling to one side or the other. You either have a front suspension part gone bad, or a broken motor mount. Put the truck in drive with your foot firmly on the brake pedal and give it some gas. Have someone look at the engine to see if it is moving excessively.

  2. Ray Thornton says:

    I have a 2003p1125 GMC Yukon xl with about 143000 miles. We are getting a p1125 code and having reduced engine power. We have replaced the throttle body, app sensor, and wiring to throttle body, but code still comes up and reduced engine power. What else can we do?

    • ProTech says:

      There is another part on your vehicle which controls the functions of the throttle body and communicates with the PCM accordingly. That part is called the TAC module (Throttle Actuator Control). It is located on the firewall. That is what most likely needs to be replaced on your vehicle. It does not require any programming, so it is a part you can replace yourself.

  3. Robert De Leon says:

    I just bought 2006 4.8 Siverado and wash the engine yesterday then the Reduced engine light came on, after 15 minutes of driving and restarting then engine it went away.
    Should I worry or was the cause for washing the engine?
    Thanks Robert De Leon

  4. Eddy says:

    My 2005 Chevy Equinox while we were driving started showing the battery light, slowly after a lot off more warning lights came. Then my accelerator didn’t work,,then it shut-off. My battery was dead, it was replace since it had warranty, i had the alternator rebuild. Now my car starts but the accelerator moves inside the cabin, but it doesn’t due nothing in the engine.

  5. jagger says:

    I have a 2006 GMC Canyon 4 cylinder engine I changed out the fuel pump once to turn on the truck the engine reduce light came on on the dash and the truck does not have power. I pushed the gas pedal and nothing what else can my truck have it never had a problem til I changed the fuel pump.

    • Billy says:

      It depends on what codes are stored in the computer. Sounds like your truck has a problem in the electronic throttle system. Maybe a bad accelerator position sensor which is part of the gas pedal.

  6. Linton Dixo says:

    I’m having the problem reduced engine power every time the light comes on my engine goes into a stall to where it doesn’t want to pick up speed

  7. Jorge Ramirez says:

    i also have a 2004 gmc sierra 2500 hd and it keeps telling me to reduce engine power i turn it off for about 15 sec and the code goes away for few hours but it does have a throttle code going on.

  8. Billy says:

    I have a 04 chevy silverado z71 thought I carefully rinsed my engine now when I drive just a little ways my reduced engine power comes on and the truck accelerates on it’s own until I shut it off is this part of the throttle body system as well?

  9. Fred says:

    I have 2003 trailblazers an my reduce engine light come on an if I pull over an shut the truck off for about 10 to 15 teen second an start it back up the light goes off for a while. An the check engine light is staying on now

  10. Anonymous says:

    I have a 2006 Saturn relay 2 and recently the engine light comes on and a message that say reduce engine speed and the van slows down. What causes this?

  11. Justin says:

    I have a 03 Chevy Silverado z71, I had my reduced engine power come on about a month ago when I started my truck, after shutting the truck off a few times and restarting it it went away and drove just fine. Now I warmed my truck up and when I was ready to go the truck shut off and I have absolutely no power, I ended up getting power back doing nothing to the truck but that lasted like a week, now I have no power and I can’t figure out where the bad connection is or is the issue related to the reduced engine power. Idk, any help with be great.

  12. Shay says:

    I have a 2004 Gmc envoy I replace the throttle body with a new one that cost me $400 ..then I got a gas petal dat was $100 more and my reduce engine light came bk on…took it to get a diagnosis test any nothing come up….what is my problem

  13. janet says:

    2005 chev silverado reduced engine light comes on … usually hot weather..hasnt done it for awhile running soon as weather warmed up it started doing it again…