Thread: 2006 Grand Prix "Reduced Engine Power" and "Service Traction System" warnings

Page 1 of 2 12 LastLast
Results 1 to 20 of 32
  1. #1 2006 Grand Prix "Reduced Engine Power" and "Service Traction System" warnings 
    SE Level Member
    Join Date
    May 2013
    Location
    renton
    Posts
    10
    Thanks (Received)
    0
    Likes (Received)
    0
    Dislikes (Received)
    0
    Engine was overheating last week, I replaced the thermostat and all was well until today.


    First the "Reduced Engine Power" warning displayed, and I could feel the reduced power as if a cylinder or two weren't firing. Shortly after the "Service Traction System" warning showed.


    I recieved 3 separate engine fault codes: P1125, P2125, and P2138. All point to the Accelerator Pedal Position sensor.


    So my question is, where is the APP sensor located, and is it likely that anything else is going on?
    Reply With Quote  
     

  2. #2 Re: 2006 Grand Prix "Reduced Engine Power" and "Service Traction System" warnings 
    Moderator dsmuts's Avatar
    Join Date
    Feb 2011
    Location
    Coldwater, OH
    Posts
    15,758
    Thanks (Received)
    1
    Likes (Received)
    1
    Dislikes (Received)
    0
    Pull your throttle body off and clean it up.
    98 GTP modded 1.9's, sd headers, 3.4", zzp 1.0 230K miles scrapped.
    04 Comp G zzp stb's, UMI ta's, Speedbuilt sways, bully flo heads, XP, zzp headers, fsic, thrasher shift kit, 60#, 2.6" corsa 2.5", Inferno hood
    01 gt z7 turbo tep trans zzp motor
    08 g8 gt cam exhaust 11.87@118
    Reply With Quote  
     

  3. #3 Re: 2006 Grand Prix "Reduced Engine Power" and "Service Traction System" warnings 
    Killa Bee Scottydoggs's Avatar
    Join Date
    Aug 2010
    Location
    new jersey
    Posts
    39,919
    Thanks (Received)
    63
    Likes (Received)
    166
    Dislikes (Received)
    5
    its on the TB

    98 Buick Regal GS, F body brakes, Caddy STS wheels, tinted tails L36 bottom end, lightly ported heads, 1.95 roller rockers, headers, gen 5 N* 3.0 pulley, FSIC, 42 lb injectors, a BrandonHall rebuilt trans, DHP tuned and AEM water/Meth injection https://goo.gl/gpV5kW
    Reply With Quote  
     

  4. #4 Re: 2006 Grand Prix "Reduced Engine Power" and "Service Traction System" warnings 
    GT Level Member GTX's Avatar
    Join Date
    Apr 2008
    Location
    Vallejo,Ca
    Posts
    334
    Thanks (Received)
    0
    Likes (Received)
    0
    Dislikes (Received)
    0
    could also be the throttle pedal position sensor....replace throttle pedal assembly


    COMP G
    Reply With Quote  
     

  5. #5 Re: 2006 Grand Prix "Reduced Engine Power" and "Service Traction System" warnings 
    GXP Level Member 91parkave's Avatar
    Join Date
    Aug 2010
    Location
    Arizona
    Posts
    2,930
    Thanks (Received)
    0
    Likes (Received)
    1
    Dislikes (Received)
    0
    Clear the codes wait to see if it comes back more than likely its not a problem with anything but if anything check the wiring to the throttle body pull on each wire slightly to see if any of them have broken connection to the harness
    06 GXP | 222/227 cam/cartuning turbo kit on 8psi/meth/e85 coilovers/ still on stock trans at 130k
    Reply With Quote  
     

  6. #6 Re: 2006 Grand Prix "Reduced Engine Power" and "Service Traction System" warnings 
    SE Level Member
    Join Date
    May 2013
    Location
    renton
    Posts
    10
    Thanks (Received)
    0
    Likes (Received)
    0
    Dislikes (Received)
    0
    Thanks everyone for your responses!

    All of the wiring around the throttle body looks solid. The problem continues to occur about every other time I drive the car, sometimes stopping and turning off the engine fit a few seconds makes it go away.

    Local parts stores want $75 after shipping for just the sensor.

    Dealer says I'll have to buy the whole pedal assembly, which is $107.

    How difficult would it be to replace the pedal?
    Reply With Quote  
     

  7. #7 Re: 2006 Grand Prix "Reduced Engine Power" and "Service Traction System" warnings 
    Moderator dsmuts's Avatar
    Join Date
    Feb 2011
    Location
    Coldwater, OH
    Posts
    15,758
    Thanks (Received)
    1
    Likes (Received)
    1
    Dislikes (Received)
    0
    Did you clean the tb yet?
    98 GTP modded 1.9's, sd headers, 3.4", zzp 1.0 230K miles scrapped.
    04 Comp G zzp stb's, UMI ta's, Speedbuilt sways, bully flo heads, XP, zzp headers, fsic, thrasher shift kit, 60#, 2.6" corsa 2.5", Inferno hood
    01 gt z7 turbo tep trans zzp motor
    08 g8 gt cam exhaust 11.87@118
    Reply With Quote  
     

  8. #8 Re: 2006 Grand Prix "Reduced Engine Power" and "Service Traction System" warnings 
    GT Level Member GTX's Avatar
    Join Date
    Apr 2008
    Location
    Vallejo,Ca
    Posts
    334
    Thanks (Received)
    0
    Likes (Received)
    0
    Dislikes (Received)
    0
    throttle pedal is a simple fix ...a two bolts and a sensor connector .....of course its located where your left foot is while driving


    COMP G
    Reply With Quote  
     

  9. #9 Re: 2006 Grand Prix "Reduced Engine Power" and "Service Traction System" warnings 
    GXP Level Member 91parkave's Avatar
    Join Date
    Aug 2010
    Location
    Arizona
    Posts
    2,930
    Thanks (Received)
    0
    Likes (Received)
    1
    Dislikes (Received)
    0
    Before you buy anything you need to take off the intake tube and verify your tb blade moves smoothly also push it back the opposite direction and make sure it do sent stick sometimes that can happen when the blade snaps back after give it some gas and will stick causing the reduced power mode as well...solution lightly sand the area in the tb bore with some 600 then 1000 till you get full movement
    06 GXP | 222/227 cam/cartuning turbo kit on 8psi/meth/e85 coilovers/ still on stock trans at 130k
    Reply With Quote  
     

  10. #10 Re: 2006 Grand Prix "Reduced Engine Power" and "Service Traction System" warnings 
    SE Level Member
    Join Date
    May 2013
    Location
    renton
    Posts
    10
    Thanks (Received)
    0
    Likes (Received)
    0
    Dislikes (Received)
    0

    Untitled by JebsJourneys, on Flickr

    so the throttle body looks pretty clean, and the blades are moving smoothly by hand. I know I should just follow the many suggestions and clean out the tb, but I plan on getting rid of the car soon and don't want to put any more $ in than absolutely necessary.
    So after looking at the picture I posted, if you still think it's the best course of action, I will promptly bite the bullet and pull that sucker off.

    Thanks again for the help,I know I am being a pain.
    Reply With Quote  
     

  11. #11 Re: 2006 Grand Prix "Reduced Engine Power" and "Service Traction System" warnings 
    Moderator dsmuts's Avatar
    Join Date
    Feb 2011
    Location
    Coldwater, OH
    Posts
    15,758
    Thanks (Received)
    1
    Likes (Received)
    1
    Dislikes (Received)
    0
    Just pull it off it's free and costs nothing.
    98 GTP modded 1.9's, sd headers, 3.4", zzp 1.0 230K miles scrapped.
    04 Comp G zzp stb's, UMI ta's, Speedbuilt sways, bully flo heads, XP, zzp headers, fsic, thrasher shift kit, 60#, 2.6" corsa 2.5", Inferno hood
    01 gt z7 turbo tep trans zzp motor
    08 g8 gt cam exhaust 11.87@118
    Reply With Quote  
     

  12. #12 Re: 2006 Grand Prix "Reduced Engine Power" and "Service Traction System" warnings 
    Killa Bee Scottydoggs's Avatar
    Join Date
    Aug 2010
    Location
    new jersey
    Posts
    39,919
    Thanks (Received)
    63
    Likes (Received)
    166
    Dislikes (Received)
    5
    its not clean, open the flip up, thats where all the carbon is, and where it gets sticky is around the edge, i see black in the pic, bottom of the butterfly flap.

    when you take it off you'll see all the crap in there. clean the back side and edges of the flap/butterfly as well.

    98 Buick Regal GS, F body brakes, Caddy STS wheels, tinted tails L36 bottom end, lightly ported heads, 1.95 roller rockers, headers, gen 5 N* 3.0 pulley, FSIC, 42 lb injectors, a BrandonHall rebuilt trans, DHP tuned and AEM water/Meth injection https://goo.gl/gpV5kW
    Reply With Quote  
     

  13. #13 Re: 2006 Grand Prix "Reduced Engine Power" and "Service Traction System" warnings 
    GXP Level Member 91parkave's Avatar
    Join Date
    Aug 2010
    Location
    Arizona
    Posts
    2,930
    Thanks (Received)
    0
    Likes (Received)
    1
    Dislikes (Received)
    0
    Quote Originally Posted by chadwick View Post

    Untitled by JebsJourneys, on Flickr

    so the throttle body looks pretty clean, and the blades are moving smoothly by hand. I know I should just follow the many suggestions and clean out the tb, but I plan on getting rid of the car soon and don't want to put any more $ in than absolutely necessary.
    So after looking at the picture I posted, if you still think it's the best course of action, I will promptly bite the bullet and pull that sucker off.

    Thanks again for the help,I know I am being a pain.
    You desperately need to clean that sucker out . 4 q0mm bolts and brake cleaner or carb cleaner and a little elbow grease and problem solved or you could keep ignoring the obvious and have to make a emergency maneuver in traffic and have reduced power mode happen and possibly get clobbered.....choice is yours bro
    06 GXP | 222/227 cam/cartuning turbo kit on 8psi/meth/e85 coilovers/ still on stock trans at 130k
    Reply With Quote  
     

  14. #14 Re: 2006 Grand Prix "Reduced Engine Power" and "Service Traction System" warnings 
    SE Level Member
    Join Date
    May 2013
    Location
    renton
    Posts
    10
    Thanks (Received)
    0
    Likes (Received)
    0
    Dislikes (Received)
    0
    I really appreciate the advice, got her all cleaned out and the blades definitely move smoother now. sensor is still malfunctioning so I'm sure if it hadn't failed when the warning first appeared, then it has now due to all of the testing. Part is on the way, so now I just have to keep driving the backup car, my wife's PT Cruiser, until Friday
    Reply With Quote  
     

  15. #15 Re: 2006 Grand Prix "Reduced Engine Power" and "Service Traction System" warnings 
    Moderator dsmuts's Avatar
    Join Date
    Feb 2011
    Location
    Coldwater, OH
    Posts
    15,758
    Thanks (Received)
    1
    Likes (Received)
    1
    Dislikes (Received)
    0
    Have you tried clearing the codes out?
    98 GTP modded 1.9's, sd headers, 3.4", zzp 1.0 230K miles scrapped.
    04 Comp G zzp stb's, UMI ta's, Speedbuilt sways, bully flo heads, XP, zzp headers, fsic, thrasher shift kit, 60#, 2.6" corsa 2.5", Inferno hood
    01 gt z7 turbo tep trans zzp motor
    08 g8 gt cam exhaust 11.87@118
    Reply With Quote  
     

  16. #16 Re: 2006 Grand Prix "Reduced Engine Power" and "Service Traction System" warnings 
    GT Level Member
    Join Date
    Apr 2013
    Location
    White Lake
    Posts
    168
    Thanks (Received)
    0
    Likes (Received)
    0
    Dislikes (Received)
    0
    Alright this same exact thing happen to my gf's uncle in his 2007 GP GT "SC". He had all the codes and took it to the shop and they said it was the "throttle pedal assembly" It cost him just over $300 for them to fix it but after that it never came back on.



    Good Luck.
    Reply With Quote  
     

  17. #17 Re: 2006 Grand Prix "Reduced Engine Power" and "Service Traction System" warnings 
    SE Level Member
    Join Date
    May 2013
    Location
    renton
    Posts
    10
    Thanks (Received)
    0
    Likes (Received)
    0
    Dislikes (Received)
    0
    so I replaced the sensor and i'm still having the same problem. is there a way to clear the codes without a reader?
    Reply With Quote  
     

  18. #18 Re: 2006 Grand Prix "Reduced Engine Power" and "Service Traction System" warnings 
    Killa Bee Scottydoggs's Avatar
    Join Date
    Aug 2010
    Location
    new jersey
    Posts
    39,919
    Thanks (Received)
    63
    Likes (Received)
    166
    Dislikes (Received)
    5
    unplug the battery for 30 minutes, this will clear the code, but only if what was wrong is fixed will it stay off. if its still ready to throw the code it will pop back in a few driving cycles. or stay off if the pcm is happy with the new sensor.

    98 Buick Regal GS, F body brakes, Caddy STS wheels, tinted tails L36 bottom end, lightly ported heads, 1.95 roller rockers, headers, gen 5 N* 3.0 pulley, FSIC, 42 lb injectors, a BrandonHall rebuilt trans, DHP tuned and AEM water/Meth injection https://goo.gl/gpV5kW
    Reply With Quote  
     

  19. #19 Re: 2006 Grand Prix "Reduced Engine Power" and "Service Traction System" warnings 
    GT Level Member GTX's Avatar
    Join Date
    Apr 2008
    Location
    Vallejo,Ca
    Posts
    334
    Thanks (Received)
    0
    Likes (Received)
    0
    Dislikes (Received)
    0
    Quote Originally Posted by chadwick View Post
    so I replaced the sensor and i'm still having the same problem. is there a way to clear the codes without a reader?
    what sensor did you replace?


    COMP G
    Reply With Quote  
     

  20. #20 Re: 2006 Grand Prix "Reduced Engine Power" and "Service Traction System" warnings 
    SE Level Member
    Join Date
    May 2013
    Location
    renton
    Posts
    10
    Thanks (Received)
    0
    Likes (Received)
    0
    Dislikes (Received)
    0
    Quote Originally Posted by GTX View Post
    what sensor did you replace?
    the accelerator pedal position sensor. it came connected to a new gas pedal
    Reply With Quote  
     

Page 1 of 2 12 LastLast

Similar Threads

  1. 1998 Pontiac grand prix,3800 Series 2 "Power Steering Problems"
    By Gchronic in forum Introductions/Noob Questions
    Replies: 1
    Last Post: 12-04-2012, 08:02 PM
  2. Clearing "Service Engine soon" light
    By bvdogg in forum General Tech Discussion
    Replies: 21
    Last Post: 09-01-2012, 01:14 PM
  3. how to remove "Service Tire Monitor System"
    By 04GT in forum 04+ Specifics
    Replies: 20
    Last Post: 12-20-2011, 10:13 AM
  4. "Reduced Engine Power" message
    By TomDaBomb2u in forum 3.8L V6 Naturally Aspirated (L36)(L26)
    Replies: 9
    Last Post: 05-19-2009, 11:00 PM
Tags for this Thread

View Tag Cloud

Bookmarks
Bookmarks
Posting Permissions
  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •