Notices
C5 General General C5 Corvette and C5 Z06 Discussion not covered in Tech

Traction Control

Old Sep 7, 2015 | 09:55 AM
  #1  
wjb50675's Avatar
wjb50675
Thread Starter
7th Gear
 
Joined: Sep 2015
Posts: 7
Likes: 0
Default Traction Control

RE: 2002, automatic, no performance add ons except Magna Flow exhaust. My display is reading "Reduced Engine Power" Service Traction Control. I plugged in OBDII, it's giving me codes for TPS problems and Fuel Pump Pressure problems.
Any help would be greatly appreciated.
Thanks, Bill
Reply
Old Sep 7, 2015 | 10:11 AM
  #2  
donald4972's Avatar
donald4972
Drifting
Supporting Lifetime
10 Year Member
 
Joined: Dec 2011
Posts: 1,422
Likes: 118
From: San Gabriel Valley California
St. Jude Donor '14-'15
Default

Originally Posted by wjb50675
RE: 2002, automatic, no performance add ons except Magna Flow exhaust. My display is reading "Reduced Engine Power" Service Traction Control. I plugged in OBDII, it's giving me codes for TPS problems and Fuel Pump Pressure problems.
Any help would be greatly appreciated.
Thanks, Bill
Guys will be able to help you diagnose this. First you must post all the codes you have, here for our experts to see.
First, clear the codes. Then drive your car around. Then; before shutting the car off, pull the codes again and write them all down. Important to do this, before shutting off the engine!

If you need, do a google search, 'how to get DIC codes on C5 Corvette'.

Each code will be followed by an C or a H (current or history). Post this also.

Good luck,
Don

Last edited by donald4972; Sep 7, 2015 at 11:20 AM. Reason: correction
Reply
Old Sep 7, 2015 | 10:56 AM
  #3  
dadaroo's Avatar
dadaroo
Le Mans Master
 
Joined: Mar 2011
Posts: 6,835
Likes: 302
From: Columbia SC
Default

Originally Posted by wjb50675
RE: 2002, automatic, no performance add ons except Magna Flow exhaust. My display is reading "Reduced Engine Power" Service Traction Control. I plugged in OBDII, it's giving me codes for TPS problems and Fuel Pump Pressure problems.
Any help would be greatly appreciated.
Thanks, Bill
Learn to pull the dash DIC codes. That way you can pull all 325 potential codes from ALL the modules and not just the few from the engine and emissions.



Mr. Sam


PS: Codes will be C or H. C is current.

Last edited by dadaroo; Sep 7, 2015 at 10:58 AM.
Reply
Old Sep 7, 2015 | 01:03 PM
  #4  
wjb50675's Avatar
wjb50675
Thread Starter
7th Gear
 
Joined: Sep 2015
Posts: 7
Likes: 0
Default Traction Control

Originally Posted by wjb50675
RE: 2002, automatic, no performance add ons except Magna Flow exhaust. My display is reading "Reduced Engine Power" Service Traction Control. I plugged in OBDII, it's giving me codes for TPS problems and Fuel Pump Pressure problems.
Any help would be greatly appreciated.
Thanks, Bill
As suggested I pulled all the codes from the DIC with just the key in the on position and as it was running, they are as follows:
10PCM P1120 H C
P1221 H C
28TCS C1278 H
No other codes were listed.
Reply
Old Sep 8, 2015 | 06:24 AM
  #5  
dadaroo's Avatar
dadaroo
Le Mans Master
 
Joined: Mar 2011
Posts: 6,835
Likes: 302
From: Columbia SC
Default

The 2 PCM codes are related to the Throttle Position sensor. That is where the problem lies. The TCS code just says TC is inhibited by the PCM and I would not worry about it.

I will post the exact diagnostics on this for you later today. Headed to a client this morning.

Should not be hard to resolve.

Here is a link on it for your reading pleasure. But I want to get you the info for your EXACT year. This guy just had one bad wire at the connector.


Mr. Sam
Reply
Old Sep 9, 2015 | 07:03 AM
  #6  
dadaroo's Avatar
dadaroo
Le Mans Master
 
Joined: Mar 2011
Posts: 6,835
Likes: 302
From: Columbia SC
Default

Sorry, apparently I did not post the link. Here is the same info for the 2 codes but correct for your year.

https://www.dropbox.com/sh/n1xob90ch...6xWSVJI4a?dl=0

Take a look and let us know if you need anything.


Mr. Sam
Reply

Get notified of new replies

To Traction Control



Thread Tools
Search this Thread

All times are GMT -4. The time now is 07:31 PM.

story-0
10 Ugly Corvettes That We Still Kinda Love

Slideshow: 10 ugly Corvettes that we still kinda love.

By Joe Kucinski | 2026-06-03 10:34:17


VIEW MORE
story-1
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

A lot of money has changed hands at the online auction house over the years.

By Brett Foote | 2026-06-03 10:21:50


VIEW MORE
story-2
10 Things Every Corvette Owner Needs (2026 Edition)

Slideshow: 10 great gifts Corvette enthusiasts actually want for Father's Day!

By Michael S. Palmer | 2026-06-03 15:43:40


VIEW MORE
story-3
8 Most "Only Corvette Owners Understand" Quirks and Problems

Slideshow: These are the quirks, annoyances, and oddly lovable problems that every Corvette owner eventually learns to live with.

By Pouria Savadkouei | 2026-05-28 09:31:39


VIEW MORE
story-4
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

Slideshow: 10 reasons why the C6 Z06 is still a performance benchmark after 20 years.

By Joe Kucinski | 2026-05-27 17:20:09


VIEW MORE
story-5
How Much Horsepower Every Corvette Engine "LOST" in 1972

Slideshow: How much horsepower every Corvette engine lost in 1972.

By Joe Kucinski | 2026-05-27 16:54:53


VIEW MORE
story-6
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

Slideshow: How to Protect A Convertible Top: 10 DOs & DON'Ts

By Michael S. Palmer | 2026-04-03 00:00:00


VIEW MORE
story-7
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

Slideshow: The 10 most explosive Corvettes ever built based on power-to-weight ratio.

By Joe Kucinski | 2026-05-20 07:23:03


VIEW MORE
story-8
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

Slideshow: From C1 to C8 we compare every Corvette generation by the numbers.

By Joe Kucinski | 2026-05-12 16:54:12


VIEW MORE
story-9
8 Coolest Corvette Pace Cars (and Replicas) of All Time

Slideshow: Some Corvette pace cars became collectible legends, while others perfectly captured the look and attitude of their era.

By Verdad Gallardo | 2026-05-11 09:50:51


VIEW MORE