check engine light
Thread Starter
Instructor
Joined: Mar 2007
Posts: 114
Likes: 0
From: Houston Texas
check engine light
I have and 03 automatic c5. I put a vara ram and flowmasters on it. My check engine light came on while i had it at the track. It is still under warranty so I took it to the dealership. They said the motor is taking in to much air bc of the vara ram and it is leaning the motor out. They said the only way to fix it is to take the vara ram off or buy a diff maf. But if I buy another maf, it will void that part of the warranty and so will dyno tuning it. Any ideas or help would be greatly appreciated
Race Director
Joined: Jan 2002
Posts: 19,557
Likes: 1,470
From: I love you & miss you Linda
2017 C7 of the Year Finalist
St. Jude Contributor
Do remember hitting the rev limiter at the track? THAT will lean the engine out momentarily and throw those codes.
The dealer is full of crap... They haven't any idea why the lean codes were thrown, so they followed your lead when you mentioned to Vara Ram...
The dealer is full of crap... They haven't any idea why the lean codes were thrown, so they followed your lead when you mentioned to Vara Ram...
Team Owner
Joined: Aug 2002
Posts: 35,617
Likes: 166
Tech Contributor
Cruise-In 11 Veteran
NCM Ambassador
St. Jude Donor '05-'06-'07-'10
http://97vette.com/howto/codes/index.html
Follow the procedure for bringing up the code and post the info back here. There are a number of things that can bring about a CEL. Many are harmless. Once we have the codes we can help you diagnose and fix the problem.
Paul
Thread Starter
Instructor
Joined: Mar 2007
Posts: 114
Likes: 0
From: Houston Texas
thanks for the codes but mine is an 03 and the codes are for an 97-00. I dont know what the codes are thought. He just told me what it was doing. If I clear the codes I will still have the problem. So what should I do. Besides sell it. lol
Le Mans Master
Joined: Oct 2005
Posts: 6,503
Likes: 2
From: Oklahoma City OK
Most of the codes on that list should apply to your 2003. If there is a serious problem It will show up again after you clear the codes. Try that first and see what comes up next...
Good luck
Good luck
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)
Joe Kucinski
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!
Michael S. Palmer
10 Revolutionary 'Corvette Firsts' Most People Don't Know
Joe Kucinski
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2
Michael S. Palmer
2027 Corvette vs The World: Every C8 vs Its Closest Competitor
Joe Kucinski
10 Most Common Corvette Problems of the Last 20 Years!
Joe Kucinski
Race Director
Joined: Jan 2002
Posts: 19,557
Likes: 1,470
From: I love you & miss you Linda
2017 C7 of the Year Finalist
St. Jude Contributor
Follow this procedure to see the codes.
Turn the key to the ON position, but don't start the engine.
Clear any present messages by pressing the RESET button.
Hold the OPTIONS button down, and press the FUEL button 4 times.
This will get you into the CODES section of the DIC.
The computer will automatically display all the codes your car has created.
It will cycle through each code every 3 seconds.
Any code that ends in H is a history code (something that has occurred in the past) but is fine now.
Once the computer has finished going through all of it's codes, press RESET to enter Manual Configuration mode.
It should start with a module and show "NO CODES" or "# CODES".
Do this then to reset and clear all codes.
To optionally reset the codes once in manual mode, press and hold RESET until it displays "NO CODES".
Press OPTIONS to go to the next module.
Repeat the steps in this paragraph until you have reset the codes in all the computer modules.
The lean codes are 1071 & 1074. You'll see them scroll through when in the PCM module.
Just clear em all, the Check Engine light with go out and all will be fine
Team Owner
Joined: Aug 2002
Posts: 35,617
Likes: 166
Tech Contributor
Cruise-In 11 Veteran
NCM Ambassador
St. Jude Donor '05-'06-'07-'10
There is NOTHING wrong with your car.
Follow this procedure to see the codes.
Turn the key to the ON position, but don't start the engine.
Clear any present messages by pressing the RESET button.
Hold the OPTIONS button down, and press the FUEL button 4 times.
This will get you into the CODES section of the DIC.
The computer will automatically display all the codes your car has created.
It will cycle through each code every 3 seconds.
Any code that ends in H is a history code (something that has occurred in the past) but is fine now.
Once the computer has finished going through all of it's codes, press RESET to enter Manual Configuration mode.
It should start with a module and show "NO CODES" or "# CODES".
Do this then to reset and clear all codes.
To optionally reset the codes once in manual mode, press and hold RESET until it displays "NO CODES".
Press OPTIONS to go to the next module.
Repeat the steps in this paragraph until you have reset the codes in all the computer modules.
The lean codes are 1071 & 1074. You'll see them scroll through when in the PCM module.
Just clear em all, the Check Engine light with go out and all will be fine
Follow this procedure to see the codes.
Turn the key to the ON position, but don't start the engine.
Clear any present messages by pressing the RESET button.
Hold the OPTIONS button down, and press the FUEL button 4 times.
This will get you into the CODES section of the DIC.
The computer will automatically display all the codes your car has created.
It will cycle through each code every 3 seconds.
Any code that ends in H is a history code (something that has occurred in the past) but is fine now.
Once the computer has finished going through all of it's codes, press RESET to enter Manual Configuration mode.
It should start with a module and show "NO CODES" or "# CODES".
Do this then to reset and clear all codes.
To optionally reset the codes once in manual mode, press and hold RESET until it displays "NO CODES".
Press OPTIONS to go to the next module.
Repeat the steps in this paragraph until you have reset the codes in all the computer modules.
The lean codes are 1071 & 1074. You'll see them scroll through when in the PCM module.
Just clear em all, the Check Engine light with go out and all will be fine
We know you don't know. We want you to follow the procedure and read them so you can tell us what they are. Help us help you. Most of the codes (read 99 percent) from the '97 - '00 will apply to your '03.
Thread Starter
Instructor
Joined: Mar 2007
Posts: 114
Likes: 0
From: Houston Texas
Thanks for everyones help. This is alot better that the dealer. Once I get these codes and clear them that still doesnt fix my problem does it? This is my first vette so I'm clueless. thanks again
Race Director
Joined: Nov 2003
Posts: 12,346
Likes: 5
From: Mustang OK
Corvette Computer Codes and DTC Information
Le Mans Master
Joined: Feb 2002
Posts: 5,407
Likes: 1
From: HONOLULU HAWAII
If there is an H after the code it means it is History...don't worry about it. If it has a C then it means it is current and the problem is ongoing.
Race Director
Joined: Jan 2002
Posts: 19,557
Likes: 1,470
From: I love you & miss you Linda
2017 C7 of the Year Finalist
St. Jude Contributor
Your problems will most likely be over with.
When you reset the codes, the Check Engine light will go off. If it does not return, you're in the clear. I'd be willing to bet it will NOT return.
Team Owner
Joined: May 2006
Posts: 21,473
Likes: 356
From: Palmdale, Ca----- 2009 Cyber Gray 4LT A6 F55 452 RWHP 422 RWTQ- RIP 1998 C5 734 RWHP & 585 RWTQ-----
Thread Starter
Instructor
Joined: Mar 2007
Posts: 114
Likes: 0
From: Houston Texas
I have the codes
OK guys. Just got off the phone with the dealership. The codes are
PO101
PO102
PO171
PO174
Should I take it and have it dyno tuned. I'm getting it done for $300 by MTI. Thanks
PO101
PO102
PO171
PO174
Should I take it and have it dyno tuned. I'm getting it done for $300 by MTI. Thanks
Le Mans Master
Joined: Jun 2004
Posts: 7,157
Likes: 154
From: The Arid Sunny Desert
Team Owner
Joined: May 2003
Posts: 23,480
Likes: 9
From: East Meadow NY
St. Jude Donor '12
Have it dyno tuned. I had the exact same issues with my halltech stinger when I would drag race mine. I would only get the codes at the track (never on the street). The tune will give you better performance and you can get the shifts firmed/speed up. It adds a great deal to A4's