Why does my Trailblazer says reduced engine power?

Why does my Trailblazer says reduced engine power?

This issue is related to the throttle position sensor, and can be caused by faulty wiring to the TPS, bad connection at the TPS, or a failed TPS. To correct this issue, the wiring harness, connector, and throttle position sensor must be inspected, tested, and/or replaced. The most common cause is a faulty TPS.

What does it mean when reduced engine power comes on?

The reduced engine power warning light shows that something has reduced the flow of fuel and/or air to the engine. It often turns on when a car needs maintenance or repair and doesn’t mean your vehicle is about to break down, but it could be a good time for an oil change.

Why does my Chevy Trailblazer have reduced engine power?

This is one of the most common reasons the reduced engine power light comes on. If the ECU isn’t getting the proper voltage response from the throttle body, it can’t be sure of how much it’ll really accelerate your Trailblazer from the gas pedal input.

What are some of the common problems with my Trailblazer?

The most common problem on your trailblazer if it has a 4.2 liter engine is the cam shaft actuator gets stuck due to a clogged screen. If the reduced engine power light is on then the check engine light should also be on. You need to check for fault codes to see what step you need to do first.

Why is my accelerator pedal position sensor not working on my Trailblazer?

I replaced my accelerator pedal position sensor on my 03 trailblazer because reduced engine light came on and when gas pedal pressed it did nothing. with new sensor it still does nothing, what do I do The most common problem on your trailblazer if it has a 4.2 liter engine is the cam shaft actuator gets stuck due to a clogged screen.

What are the oxygen sensors on my trailblazer for?

Your Trailblazer’s oxygen sensors measure the amount of oxygen in the exhaust to help insure that the proper air/fuel mixture is realized.