Engine power reduced

Asked by Apr 05, 2017 at 08:59 PM about the 2008 Chevrolet Malibu 1LT FWD

Question type: Maintenance & Repair

What exactly does it mean when your car reads
engine power reduced

21 Answers


Your engine cannot perform the way it should. A cause would be the Throttle Positioning Sensor, or the wiring harness may have a broken wire at the plugin. Have the vehicle scanned for trouble codes to verify.

4 people found this helpful.

The onboard computer system has sensed a problem with something in the engine management system, you should also have a check engine light along with it, you will need to have the code pulled to find out what has failed or of you have an open corcuit. Someplace like autozone can pull the codes for you free of charge. If your so inclined.

2 people found this helpful.

Can a bad O2 sensor cause reduced engine power?

5 people found this helpful.

Yes but they usually have a check engine light and a code stating something is wrong with it, could be exhaust restriction or fuel delivery.

2 people found this helpful.

The check engine light is on, and I am getting a P0155 error code. This is the Bank 2 / Sensor 1 Heater Circuit Malfunction. Would this cause the truck to go into reduced engine power after the motor was running for a while?


Yes it very could, if it's not heating up properly the readings will be inaccurate and the computer will react accordingly, possibly even going back into closed loop under low speeds, so check the O2 heater circuit, it may have blown a fuse, or the resistance is too high inside the O2 sensor itself. The car is almost 10 years old this fall so you might think about replacing the upstream O2 sensors as a maintenance item, downstream O2 sensors seem to last twice as long as upstream, so don't worry about those until you get a code for them, and even then it might be catalyst and not the sensor.

2 people found this helpful.

I have a 2006 Chevy Malibu and my car says engine power reduced with the engine light on as well. When I press the gas acceleration is slower than normal can you tell me what the problem could be?

2 people found this helpful.

If the check engine light is on then it has stored a code or more, so swing by a place like auto zone and have the codes pulled, write them down and repost them back here, someone will jump in and help you along with further diagnosis.

1 people found this helpful.

Thanks @tennisshoes the code on my car is P2138


Well that may very well enplane the acceleration problem, Throttle pedal position sensor, for more information go to: https://www.engine- codes.com/p2138_chevrolet.html

1 people found this helpful.

I have a 2016 Chevy Malibu it say check engine power it also has the check engine light on its not picking up speed. HELLLPPP!

7 people found this helpful.

Sadara mine is doing the same!!!! So scary!!! Specially pulling onto a busy highway! i have already had it at the dealership once with it. They replaced a few things and its doing it again! Did yours get resolved?

Spray the 02 senser down with some corb cleaner an ull be just fine.. just did it just now, now im getting full power

I have a 2016 Malibu and the engine light came p2097 show up on the Machine

Why my check engine light come on i just put 89 percent gas in the car


You mean 89 octane? If the owners manual recommends that rating then fuel should not turn on the light, things like a loose gas cap, fuel tank venting controls are two that can cause the light to turn on right after refilling. Swing by a place that can pull the codes like autozone and see what they tell you and repost them back here, someone will hop on and help you along with further diagnosis. HTH


I have 2016 shave Malibu suddenly enjine power is reduced, engine sign car is not going more then 6,

2 people found this helpful.

I am beyond words....I have a 2013 Chevy Malibu eco model last Sunday I was headed on a day trip with my family when my check engine lite and reduced engine power warning came on....I immediately pulled over and shut the car off scared to death....when we tried to restart car it would not start and was towed to my mechanic.. Today I got the call that this would cost thousands to pull motor and possibly still would need new motor put in. THIS CAR IS A 2013 WITH 76K MILES.... DO NOT BUY A CHEVY THE DO NOT LAST!!!!

I have a 2005 chevy malibu and was told it could be crankshaft or ecm. At Autozone they pulled the code while the check engine light was on and it said code p0601 - the ecm. I found a website, after checking the reviews, called protech auto systems out of ft lauderdale. They sale preprogrammed rebuild ecms for under $300. they match it to my vin. Imagine that compared to the almost $900 stingray chevy wanted to charge me.

I have a 2016 and my engine light came on and it says engine power reduce it came after I hit a bump in street what could it be

I have a 2018 Chev Mailbu, just got it in March with only 11k miles on it. And my check engine light on, saying Engine Power Reduced. Smh, extremely disappointed. It’s doing the same thing my 2005 did. I minds well should of just fixed that one if I was going to run into the same problems smh!

Your Answer:


Looking for a Used Malibu in your area?

CarGurus has 1,807 nationwide Malibu listings starting at $2,950.

Postal Code:

Chevrolet Malibu Experts

  • #1
  • #2
  • #3
    Tom Demyan
View All

Related Models For Sale

Used Chevrolet Impala
22 Great Deals out of 879 listings starting at $2,894
Used Honda Accord
35 Great Deals out of 1,657 listings starting at $3,490
Used Toyota Camry
31 Great Deals out of 2,072 listings starting at $2,450
Used Nissan Altima
37 Great Deals out of 1,202 listings starting at $1,600
Used Ford Fusion
33 Great Deals out of 1,738 listings starting at $3,600
Used Dodge Charger
45 Great Deals out of 925 listings starting at $3,500
Used Kia Optima
38 Great Deals out of 854 listings starting at $4,995
Used Hyundai Sonata
38 Great Deals out of 1,381 listings starting at $2,500
Used Honda Civic
106 Great Deals out of 4,734 listings starting at $1,500
Used Nissan Maxima
3 Great Deals out of 337 listings starting at $3,800
Used Chevrolet Equinox
66 Great Deals out of 4,620 listings starting at $3,995
Used Chrysler 300
32 Great Deals out of 1,025 listings starting at $3,500

Used Cars For Sale

2016 Chevrolet Malibu 1LT FWD For Sale
47 listings starting at $14,450
2015 Chevrolet Malibu 1LT FWD For Sale
64 listings starting at $12,970

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.