Abs traction light
Racer
Joined: Jun 2005
Posts: 438
Likes: 0
This happened to me, recently. The light would come on every time I'd drive the car. The code said it was the right wheel sensor and that I had lost communication with the body control module (bcm).
My shop tested the sensor and found out it was working perfectly. They shot a little dielectric grease into the connection and the light hasn't come on in 10 days. I drive my car everyday, too.
Had it not been a bad connection, then the estimate for repair was around $500, including labor.
My shop tested the sensor and found out it was working perfectly. They shot a little dielectric grease into the connection and the light hasn't come on in 10 days. I drive my car everyday, too.
Had it not been a bad connection, then the estimate for repair was around $500, including labor.
Thread Starter
Instructor
Joined: Aug 2008
Posts: 121
Likes: 0
From: Murray River P.E.I.
abs traction light
Tech Contributor
Joined: Dec 2003
Posts: 19,384
Likes: 87
From: Horncastle Lincolnshire, England
2023 C5 of the Year Finalist - Unmodified
The active handling ABS system is quite complex
What you need to do is check the codes on the DIC and post them up. That will give an idea about which part of the system is giving the problem and we can start to troubleshoot it.
What you need to do is check the codes on the DIC and post them up. That will give an idea about which part of the system is giving the problem and we can start to troubleshoot it.
Race Director
Joined: Jul 2007
Posts: 18,681
Likes: 47
From: Reno is so close to Hell you can see Sparks , State Of Confusion
St. Jude Donor '12-'13-'14
Here is how you check the code.
With key on, Make sure dic is clear, Hold options and hit fuel 4 times.. Have a pen and paper ready.
If the code has an H it is history, If it has a C it is a current code.
Here is a site with the codes.
http://www.obd-codes.com/trouble_cod...d-ii-codes.php
With key on, Make sure dic is clear, Hold options and hit fuel 4 times.. Have a pen and paper ready.
If the code has an H it is history, If it has a C it is a current code.
Here is a site with the codes.
http://www.obd-codes.com/trouble_cod...d-ii-codes.php
Thread Starter
Instructor
Joined: Aug 2008
Posts: 121
Likes: 0
From: Murray River P.E.I.
abs traction light
Cleared codes last night to get light to go out did not record them stupid I know now.Will have to wait untill it does it again.Only codes that are there is P1571H and U1016H.Thanks.
Race Director
Joined: Aug 2001
Posts: 10,783
Likes: 15
From: Hurricane Alley
When I got the message the first time, I had to replace my ABS computer and that is not cheap. It could be something else though. There have been situations where if you were driving and you turned the wheels sharp, then you would pull on the ABS sensor and it would trigger that message.
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Verdad Gallardo
Tech Contributor
Joined: Dec 2003
Posts: 19,384
Likes: 87
From: Horncastle Lincolnshire, England
2023 C5 of the Year Finalist - Unmodified
Ignore the U code as they are often set by power glitches.
You'll be pleased to know you don't have the normal snags that most of us are plagued with. The bad news is its an unusual one
P1571 is set when the PCM detects that a requested torque signal is either out of range or an expected signal was not received. The "H", is a history code and means that its been detected but is not affecting the system at present.
The Electronic Brake Control Module (EBCM) sends the torque message to the PCM to let it know how much torque it wants under varying driving conditions
I've never heard of that snag before so my advice would be to sit it out and hope it was a one off. In fact if you have a U code it could have been just a stray wiggly causing the glitch.
Hope it doesn't come back for you
Post up again if it reappears or if there are any other codes.
Last edited by DeeGee; Aug 31, 2008 at 10:51 AM.
Thread Starter
Instructor
Joined: Aug 2008
Posts: 121
Likes: 0
From: Murray River P.E.I.
Ignore the U code as they are often set by power glitches.
You'll be pleased to know you don't have the normal snags that most of us are plagued with. The bad news is its an unusual one
P1571 is set when the PCM detects that a requested torque signal is either out of range or an expected signal was not received. The "H", is a history code and means that its been detected but is not affecting the system at present.
The Electronic Brake Control Module (EBCM) sends the torque message to the PCM to let it know how much torque it wants under varying driving conditions
I've never heard of that snag before so my advice would be to sit it out and hope it was a one off. In fact if you have a U code it could have been just a stray wiggly causing the glitch.
Hope it doesn't come back for you
Post up again if it reappears or if there are any other codes.
You'll be pleased to know you don't have the normal snags that most of us are plagued with. The bad news is its an unusual one
P1571 is set when the PCM detects that a requested torque signal is either out of range or an expected signal was not received. The "H", is a history code and means that its been detected but is not affecting the system at present.
The Electronic Brake Control Module (EBCM) sends the torque message to the PCM to let it know how much torque it wants under varying driving conditions
I've never heard of that snag before so my advice would be to sit it out and hope it was a one off. In fact if you have a U code it could have been just a stray wiggly causing the glitch.
Hope it doesn't come back for you
Post up again if it reappears or if there are any other codes.
Racer
Joined: Jun 2005
Posts: 289
Likes: 10
Abs
Your codes if any, have been logged in the computer. Should you have any problems this website may help you and save some $$$. www.absfixer.com sorry don't know how to hyperlink. Hope this helps. Mark
Tech Contributor
Joined: Oct 1999
Posts: 41,055
Likes: 9,817
From: Charlotte, NC (formerly Endicott, NY)
The P1571 H code is listed in a TSB for 97s and may not go away. The next time the warning shows up list the codes you see. ABSFixer isn't the be all and end all since I don't think they service EBTCMs from early model C5s. What were you doing (brake/throttle/steering) when the warnings flashed? The original 97 EBTCM had a slight design flaw that didn't affect many people but did affect people who autocrossed their cars on tight courses. There was an updated EBTCM released in 98 but most owners didn't know they had a problem so didn't get the update.
This problem showed up within 2 months of my taking delivery of my 97. The dealer's best tech tore the system apart 4 or 5 times and never found anything wrong. Due to insider connections I found out about the design flaw and was first in line for the update when the parts became available. By that time I had flat spotted a set of Run Flats and corded several race tires due to the front wheels locking up.
Bill
This problem showed up within 2 months of my taking delivery of my 97. The dealer's best tech tore the system apart 4 or 5 times and never found anything wrong. Due to insider connections I found out about the design flaw and was first in line for the update when the parts became available. By that time I had flat spotted a set of Run Flats and corded several race tires due to the front wheels locking up.
Bill
Thread Starter
Instructor
Joined: Aug 2008
Posts: 121
Likes: 0
From: Murray River P.E.I.
P1571h
The P1571 H code is listed in a TSB for 97s and may not go away. The next time the warning shows up list the codes you see. ABSFixer isn't the be all and end all since I don't think they service EBTCMs from early model C5s. What were you doing (brake/throttle/steering) when the warnings flashed? The original 97 EBTCM had a slight design flaw that didn't affect many people but did affect people who autocrossed their cars on tight courses. There was an updated EBTCM released in 98 but most owners didn't know they had a problem so didn't get the update.
This problem showed up within 2 months of my taking delivery of my 97. The dealer's best tech tore the system apart 4 or 5 times and never found anything wrong. Due to insider connections I found out about the design flaw and was first in line for the update when the parts became available. By that time I had flat spotted a set of Run Flats and corded several race tires due to the front wheels locking up.
Bill
This problem showed up within 2 months of my taking delivery of my 97. The dealer's best tech tore the system apart 4 or 5 times and never found anything wrong. Due to insider connections I found out about the design flaw and was first in line for the update when the parts became available. By that time I had flat spotted a set of Run Flats and corded several race tires due to the front wheels locking up.
Bill
