P0300, P0132 and P1571 codes
Thread Starter
Drifting
Joined: Feb 2008
Posts: 1,742
Likes: 1
From: Middletown de
P0300, P0132 and P1571 codes
97 with headers and no cats with borla exhaust. All else is stock. After installing headers, car would intermittently run rough at idle, like at a stop light. At cruise speed, car runs fine. The GF drives the car everyday and she said it seems like it happens when it rains. Coincidence, I dont know. Got flashing check engine light. Pulled codes and these are the ones that I got. P0300, P0132 and P1571. Checked plug wires and they seem to be good. I will replace plugs on Tues. They could prolly use it anyhow. I would appreciate any input. I am at work right now, so I will check thread as time allows. Thanks, John
Thread Starter
Drifting
Joined: Feb 2008
Posts: 1,742
Likes: 1
From: Middletown de
Forgot to mention, the car did this before I got a tune and is doing it after the tune. If it was a bad plug wouldnt this have been noticed during the tune. After thinking about and doing some more research, I think I may have a bad O2 wire that is getting wet. I will check in the morning to see how the O2 wires look. Any other suggestions would greatly be appreciated. Thank, John
Melting Slicks
Joined: Mar 2005
Posts: 2,891
Likes: 4
From: North Port Fl
P0132 Heated Oxygen Sensor (HO2S) Circuit High Voltage Bank 1 Sensor 1
P0300 Engine Misfire Detected
P1571 ASR Desired Torque
http://www.stengel.net/diccodes.htm
P0300 Engine Misfire Detected
P1571 ASR Desired Torque
http://www.stengel.net/diccodes.htm
Le Mans Master
Joined: Mar 2004
Posts: 5,562
Likes: 5
From: South East coast Florida
Did the codes have an H or a C associated with them. The H means history and C current. Did you reset the codes and then they came back? Post up the exact codes as read.
A broken plug, happens quite a bit during header install could be minor in nature and only act up when wet. Spray some water around the area and watch/listen for any arcing or if the codes reappear before you chnge anything. I always like to find the root cause first... so I know I fixed it.
The 1571 is a Traction Control fault which is wierd for a header install, unless the car was dyno'd. Could be a history code and not related. Clear if H and see if it returns. I read that the 97 had 1571 issues. Also stated that this code may not be able to be cleared.
http://forums.corvetteforum.com/c5-t...-on-97-c5.html
The P0300 is a misfire, and could be related if a cracked plug or bad wire is the cause.
Finally the P0132 is O2 sensor related as the O2 sensor voltage is remaining above 775 mv. Should be toggling around 450 mv to 1v (rich) and 0v (lean). This could be a result of the header install either wiring or running so rich the fuel trims can't adjust the AFR to a proper level. Puzzling is I believe the P0132 test isn't run if you have a bunch of other codes, which include the P0300 and P1571?
Hope this helps
Ed
A broken plug, happens quite a bit during header install could be minor in nature and only act up when wet. Spray some water around the area and watch/listen for any arcing or if the codes reappear before you chnge anything. I always like to find the root cause first... so I know I fixed it.
The 1571 is a Traction Control fault which is wierd for a header install, unless the car was dyno'd. Could be a history code and not related. Clear if H and see if it returns. I read that the 97 had 1571 issues. Also stated that this code may not be able to be cleared.
http://forums.corvetteforum.com/c5-t...-on-97-c5.html
The P0300 is a misfire, and could be related if a cracked plug or bad wire is the cause.
Finally the P0132 is O2 sensor related as the O2 sensor voltage is remaining above 775 mv. Should be toggling around 450 mv to 1v (rich) and 0v (lean). This could be a result of the header install either wiring or running so rich the fuel trims can't adjust the AFR to a proper level. Puzzling is I believe the P0132 test isn't run if you have a bunch of other codes, which include the P0300 and P1571?
Hope this helps
Ed
Last edited by mowton; Apr 5, 2009 at 07:23 AM.
Thread Starter
Drifting
Joined: Feb 2008
Posts: 1,742
Likes: 1
From: Middletown de
Did the codes have an H or a C associated with them. The H means history and C current. Did you reset the codes and then they came back? Post up the exact codes as read.
A broken plug, happens quite a bit during header install could be minor in nature and only act up when wet. Spray some water around the area and watch/listen for any arcing or if the codes reappear before you chnge anything. I always like to find the root cause first... so I know I fixed it.
The 1571 is a Traction Control fault which is wierd for a header install, unless the car was dyno'd. Could be a history code and not related. Clear if H and see if it returns. I read that the 97 had 1571 issues. Also stated that this code may not be able to be cleared.
http://forums.corvetteforum.com/c5-t...-on-97-c5.html
The P0300 is a misfire, and could be related if a cracked plug or bad wire is the cause.
Finally the P0132 is O2 sensor related as the O2 sensor voltage is remaining above 775 mv. Should be toggling around 450 mv to 1v (rich) and 0v (lean). This could be a result of the header install either wiring or running so rich the fuel trims can't adjust the AFR to a proper level. Puzzling is I believe the P0132 test isn't run if you have a bunch of other codes, which include the P0300 and P1571?
Hope this helps
Ed
A broken plug, happens quite a bit during header install could be minor in nature and only act up when wet. Spray some water around the area and watch/listen for any arcing or if the codes reappear before you chnge anything. I always like to find the root cause first... so I know I fixed it.
The 1571 is a Traction Control fault which is wierd for a header install, unless the car was dyno'd. Could be a history code and not related. Clear if H and see if it returns. I read that the 97 had 1571 issues. Also stated that this code may not be able to be cleared.
http://forums.corvetteforum.com/c5-t...-on-97-c5.html
The P0300 is a misfire, and could be related if a cracked plug or bad wire is the cause.
Finally the P0132 is O2 sensor related as the O2 sensor voltage is remaining above 775 mv. Should be toggling around 450 mv to 1v (rich) and 0v (lean). This could be a result of the header install either wiring or running so rich the fuel trims can't adjust the AFR to a proper level. Puzzling is I believe the P0132 test isn't run if you have a bunch of other codes, which include the P0300 and P1571?
Hope this helps
Ed
I will try and spray some water around the plugs and check for arcing.
I did have the car dyno'ed. That would explain the 1571 code. It did clear. Thanks.
I will replace plugs and wires on Tues. I think I have an O2 sensor wire problem. This rough idle happened before and after my tune and dyno. If it was a bad plug, wouldnt this have been seen during the dyno/tune. Or does depend on how bad the plug is?
Thanks for the advice. I will try these things and post back my results.
Safety Car
Joined: Dec 2004
Posts: 3,526
Likes: 20
From: Santa Fe TX
indeed...1571H is a persistent code on 97's. There is a TSB on it.
Be sure to check your wiring is tucked away from heat or you will get lots of P01xx codes for o2 sensor readings and response times.
P0300 is a misfire, so either you didn't get a plug seated right or cracked a plug (both easy to do)
or
something else I can't think of.
Be sure to check your wiring is tucked away from heat or you will get lots of P01xx codes for o2 sensor readings and response times.
P0300 is a misfire, so either you didn't get a plug seated right or cracked a plug (both easy to do)
or
something else I can't think of.
Thread Starter
Drifting
Joined: Feb 2008
Posts: 1,742
Likes: 1
From: Middletown de
indeed...1571H is a persistent code on 97's. There is a TSB on it.
Be sure to check your wiring is tucked away from heat or you will get lots of P01xx codes for o2 sensor readings and response times.
P0300 is a misfire, so either you didn't get a plug seated right or cracked a plug (both easy to do)
or
something else I can't think of.
Be sure to check your wiring is tucked away from heat or you will get lots of P01xx codes for o2 sensor readings and response times.
P0300 is a misfire, so either you didn't get a plug seated right or cracked a plug (both easy to do)
or
something else I can't think of.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Tech Contributor
Joined: Oct 1999
Posts: 41,058
Likes: 9,820
From: Charlotte, NC (formerly Endicott, NY)
Thread Starter
Drifting
Joined: Feb 2008
Posts: 1,742
Likes: 1
From: Middletown de
Removed O2 sensors and associated wiring. Heat shrinked and electrical taped. Replaced sensors. Took a 100 mile drive and she ran great. The true test will be how she acts in the rain. We shall see. Thanks for the great info guys. I really appreciate it.
John
John
Safety Car
Joined: Dec 2004
Posts: 3,526
Likes: 20
From: Santa Fe TX
If it runs great and quickly deteriorates, then you will know the wiring is melting again. Even if you insulated it etc, if it is too close to the pipes and not tied away from them, then it will eventually cause slow 02 response times.
Le Mans Master
Joined: Mar 2004
Posts: 5,562
Likes: 5
From: South East coast Florida
Thread Starter
Drifting
Joined: Feb 2008
Posts: 1,742
Likes: 1
From: Middletown de
