"Reduced Engine Power" Code (Accelerator Position Sensor) - Truck Forums

Thread Tools Search this Thread
Old 07-17-2011, 01:07 PM
Junior Member
Thread Starter
Join Date: Jul 2011
Posts: 1
Default "Reduced Engine Power" Code (Accelerator Position Sensor)

When driving my 2005 Chevy Silverado, 2500 HD, 6L the "reduced engine power" comes up on the dash. I had the local mechanic connect his scan tool to the truck, he said to replace the accelerator position sensor. So after replacing 2 of them with no correction to the problem. I took it to the Chevy dealer, they recommended replacing the wiring harness to the sensor. Two weeks after replacing the wiring harness the reduced engine code came up again.

I have a CarMD scan tool. Error Code P1125 comes up when plugged in.
The definition of the code stated : Accelerator Position Sensor 1 and 2 Circuit Malfunction
Reply With Quote
Old 07-23-2011, 11:29 AM
Senior Member
Join Date: Jan 2010
Posts: 124

If infact a dealership diagnosed and replaced the harness, then in my opinion, if falls under warranty. next step might well be the Engine Control Module.
Reply With Quote
Old 07-23-2011, 06:27 PM
cubpak89's Avatar
TruckForum Addict
Join Date: Feb 2011
Location: iowa
Posts: 879

i hate to say your computer may be going out
does teh security light come on when this is happening
we had to replace 2 computers in one work truck cause it did the same thing yours did
Reply With Quote

Related Topics
Thread Thread Starter Forum Replies Last Post
2000 Silverado ignition key stays in "start" position - no return spring to "run" DivotMaker General Motors Tech 0 03-31-2011 02:32 PM
Key cylinder stuck in "ACC" position cowboyboose Ford Heavy Duty 0 10-06-2010 07:10 PM
Reduced engine power trouble 03 2500hd jumpinfarmer Chevy Silverado/ GMC Sierra Forum 1 11-08-2008 10:11 PM
Reduced Engine Power msg alexmolinavr6 Chevy Silverado/ GMC Sierra Forum 1 10-06-2008 06:53 PM
exhaust accelerator smoke20 Chevy Silverado/ GMC Sierra Forum 2 12-20-2006 12:41 AM

1125, 2005, 2500hd, chevy, code, engine, error, ford, message, power, reduced, redused, silverado, truck, trucks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Featured Sponsors
Vendor Directory

All times are GMT -5. The time now is 11:55 AM.

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.