Q: Q: I have a reduced engine power light.

asked by on

I have a reduced engine power light and my truck would not accelerate at times. Once I cut it off and cut it back on it's fine. But after awhile it does it again. What could this be?

My car has 198000 miles.
My car has an automatic transmission.

Hi there. This light can come on for a number of reasons. It usually comes on when there is a voltage issue, but it will also come on when the computer finds a reason to reduce the power to protect the engine. I usually start by load testing the alternator an the battery. One of these is usually the issue. If these are fine then the computer should be scanned for codes to see if there is anything stored in the computer. Most of the time the issue is a failure in the throttle body. This fails and keeps the computer from being able to control engine throttle. If you need to have this warning light checked, consider YourMechanic, as a certified mechanic can come to you to [diagnose why the recuded power light is coming on] https://www.yourmechanic.com/services/reduced-power-light-is-on-inspection

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Q: I have a reduced engine power light.

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Speaker wires c304 connector

Hello. The connector you are looking for should be located with the radio harness or is located with the wiring going to the amplifier. The amplifier can be located in several different places. It could be located in the truck...

Q: Q: Why no brakes

I would first recommend checking the brake fluid level. There needs to be ample brake fluid in the system to so that there is not a lack of hydraulic pressure. Secondly, check to be sure you do not have vacuum...

Q: I need to buy an alternator today. Mine had to much wattage due to my new sub and amp. How do I know what alternator to buy? 2003 Chevrolet Suburban 1500

Hello - the real question here, and this is for your sound system person, is "How many watts does all this new gear pull?". Then you calculate how many amps that translates to what capacity alternator you need. (Amps =...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...