DTC Codes!
Burning Brakes
Joined: May 2005
Posts: 945
Likes: 23
From: Uniondale IN
St. Jude Donor '14-'15-'16
p0171c fuel trim system lean bank 1
p0174c fuel trim system lean bank 2
p1626h theft deterrent system fuel enable circuit
c2105c right front tpm sensor malfunction
You can goggle C5 corvette dic codes and it will give you a complete list. I printed the complet list and keep it in the car. That way if something happens, you will know where to start looking.
Also, the c stands for current issues and the h stands for history or past issues.
p0174c fuel trim system lean bank 2
p1626h theft deterrent system fuel enable circuit
c2105c right front tpm sensor malfunction
You can goggle C5 corvette dic codes and it will give you a complete list. I printed the complet list and keep it in the car. That way if something happens, you will know where to start looking.
Also, the c stands for current issues and the h stands for history or past issues.
Tech Contributor
Joined: Dec 2003
Posts: 19,384
Likes: 87
From: Horncastle Lincolnshire, England
2023 C5 of the Year Finalist - Unmodified
The C2105 should be easy. Are you getting XXX on the DIC for that TPS? If so the battery is on its way out. A straight TPS swap should fix it. I just picked one up at Baeur Millet from their obsolete stock. Not sure if they have any more though.
The 0171/0174 is harder. I've known a loose petrol cap or a bad seal on the cap to cause issues like that. Worth a check first.
From the service manual there are a few simple things to check:
Check the vacuum hoses and connections for splits or kinks.
Top up the tank to make sure its not a low fuel pressure issue.
Check the crankcase ventilation system for leaks.
Check the intake manifold and air induction system for leaks
If its still set you're into more complex checks.
Just out of interest have you modified the engine/headers/exhaust?
The 0171/0174 is harder. I've known a loose petrol cap or a bad seal on the cap to cause issues like that. Worth a check first.
From the service manual there are a few simple things to check:
Check the vacuum hoses and connections for splits or kinks.
Top up the tank to make sure its not a low fuel pressure issue.
Check the crankcase ventilation system for leaks.
Check the intake manifold and air induction system for leaks
If its still set you're into more complex checks.
Just out of interest have you modified the engine/headers/exhaust?
POSSE SENIOR RIDER
Joined: May 2003
Posts: 4,193
Likes: 697
From: Suffield, CT
Drifting
Joined: Feb 2007
Posts: 1,793
Likes: 7
From: Santa Maria Ca.
I used to occasionally get the 0171/0174 codes-tightened all the clamps on the CAI,and haven't had one since (the clamp on the throttle body was a little loose,I think that one was causing the codes,but since I tightened them all I can't say for sure)
Either way,it's a 5 minute thing to do,so you might as well give it a shot....
Either way,it's a 5 minute thing to do,so you might as well give it a shot....
Tech Contributor
Joined: Dec 2003
Posts: 19,384
Likes: 87
From: Horncastle Lincolnshire, England
2023 C5 of the Year Finalist - Unmodified
With all those mods it makes it harder to track down and it's outside my level of expertise I'm afraid. Checking for leaks is a good start. 8vette7 knows his stuff so you have a good guy on the case
Thread Starter
Instructor
Joined: Aug 2009
Posts: 242
Likes: 0
From: Orlando Florida
Okay so I couldnt figure out how to get rid of the codes. I looked everywhere under the hood for any split/crack hoses but no luck. After all that I finally decided to switch my MAF sensor back to stock. And ALL THE CODES DISAPPEARED! Thanks for all the help.
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