Codes of Frustration
Thread Starter
Burning Brakes
Joined: Nov 2002
Posts: 896
Likes: 3
From: Washington MO
Codes of Frustration
So I've had my new to me 02 EBM M6 vert for one month. Between the rainy weather and getting some paint work done, there hasn't been much seat time to enjoy it. So I get it back from the body shop Friday, spend all weekend in my shop detailing it to my liking. Get off work today, sun is shining, car is clean, time for a cruise... Until...
I start the car and right away I get an ABS light and a TC light along with the codes, they are;
PCM P1571 ASR Desired Torque
28 TCS No Comm.
58 SDM U1040 H C
Been searching the forum and found several threads about the same codes, but no one seems to post their fixes.
This is just really frustrating,
especially with the holiday weekend coming up.
Anyone had a proven solution for this issue? Help is greatly appreciated.
Thanks.
I start the car and right away I get an ABS light and a TC light along with the codes, they are;
PCM P1571 ASR Desired Torque
28 TCS No Comm.
58 SDM U1040 H C
Been searching the forum and found several threads about the same codes, but no one seems to post their fixes.
This is just really frustrating,
especially with the holiday weekend coming up.Anyone had a proven solution for this issue? Help is greatly appreciated.
Thanks.
Thread Starter
Burning Brakes
Joined: Nov 2002
Posts: 896
Likes: 3
From: Washington MO
So, I had the battery checked. It tested bad under load. Ok, I'll replace it and keep my fingers crossed.
Get the new battery installed, jump in, start the car and......
still got the same damn codes.
Guess I start trouble shooting with the links posted above.
Very disappointed and bummed out right now.
Get the new battery installed, jump in, start the car and......
still got the same damn codes.
Guess I start trouble shooting with the links posted above.
Very disappointed and bummed out right now.
Thread Starter
Burning Brakes
Joined: Nov 2002
Posts: 896
Likes: 3
From: Washington MO
Instructor
Joined: Mar 2014
Posts: 205
Likes: 0
From: Alpine TX
I had those same three codes when I purchased my 01 Vert. Went through all the same stuff you are. Did all the tests listed above, finally pulled the EBCM and sent it in to a repair facility that I saw mentioned on here.
They sent it back a couple of days later. I just got it back but haven't had a moment to reinstall it yet. I was curious what they repaired on it so I called them and they said they found a bad relay, and a diode was bad. The tech explained that this could have easily been caused from a battery charger or trickle charger. This is well documented as a true statement. I knew the relay was a common issue with these modules, and are around $5 to purchase a new one, but the cost for this repair is $50 more or less. I would not have known to replace the diode, so I'm glad I sent it out vs. doing it myself. Takes about an hour to remove the module the first time, and you can drive the car with it off, so no down time.
Hope this helps.
They sent it back a couple of days later. I just got it back but haven't had a moment to reinstall it yet. I was curious what they repaired on it so I called them and they said they found a bad relay, and a diode was bad. The tech explained that this could have easily been caused from a battery charger or trickle charger. This is well documented as a true statement. I knew the relay was a common issue with these modules, and are around $5 to purchase a new one, but the cost for this repair is $50 more or less. I would not have known to replace the diode, so I'm glad I sent it out vs. doing it myself. Takes about an hour to remove the module the first time, and you can drive the car with it off, so no down time.
Hope this helps.
Thread Starter
Burning Brakes
Joined: Nov 2002
Posts: 896
Likes: 3
From: Washington MO
Well I'm going to start doing all the test on my car this evening and see what happens. If you would let me know if your issue is fixed once you get the EBCM back on your car. Thanks.
I had those same three codes when I purchased my 01 Vert. Went through all the same stuff you are. Did all the tests listed above, finally pulled the EBCM and sent it in to a repair facility that I saw mentioned on here.
They sent it back a couple of days later. I just got it back but haven't had a moment to reinstall it yet. I was curious what they repaired on it so I called them and they said they found a bad relay, and a diode was bad. The tech explained that this could have easily been caused from a battery charger or trickle charger. This is well documented as a true statement. I knew the relay was a common issue with these modules, and are around $5 to purchase a new one, but the cost for this repair is $50 more or less. I would not have known to replace the diode, so I'm glad I sent it out vs. doing it myself. Takes about an hour to remove the module the first time, and you can drive the car with it off, so no down time.
Hope this helps.
They sent it back a couple of days later. I just got it back but haven't had a moment to reinstall it yet. I was curious what they repaired on it so I called them and they said they found a bad relay, and a diode was bad. The tech explained that this could have easily been caused from a battery charger or trickle charger. This is well documented as a true statement. I knew the relay was a common issue with these modules, and are around $5 to purchase a new one, but the cost for this repair is $50 more or less. I would not have known to replace the diode, so I'm glad I sent it out vs. doing it myself. Takes about an hour to remove the module the first time, and you can drive the car with it off, so no down time.
Hope this helps.
Instructor
Joined: May 2014
Posts: 158
Likes: 0
From: Clinton Ontario
I had those same three codes when I purchased my 01 Vert. Went through all the same stuff you are. Did all the tests listed above, finally pulled the EBCM and sent it in to a repair facility that I saw mentioned on here.
They sent it back a couple of days later. I just got it back but haven't had a moment to reinstall it yet. I was curious what they repaired on it so I called them and they said they found a bad relay, and a diode was bad. The tech explained that this could have easily been caused from a battery charger or trickle charger. This is well documented as a true statement. I knew the relay was a common issue with these modules, and are around $5 to purchase a new one, but the cost for this repair is $50 more or less. I would not have known to replace the diode, so I'm glad I sent it out vs. doing it myself. Takes about an hour to remove the module the first time, and you can drive the car with it off, so no down time.
Hope this helps.
They sent it back a couple of days later. I just got it back but haven't had a moment to reinstall it yet. I was curious what they repaired on it so I called them and they said they found a bad relay, and a diode was bad. The tech explained that this could have easily been caused from a battery charger or trickle charger. This is well documented as a true statement. I knew the relay was a common issue with these modules, and are around $5 to purchase a new one, but the cost for this repair is $50 more or less. I would not have known to replace the diode, so I'm glad I sent it out vs. doing it myself. Takes about an hour to remove the module the first time, and you can drive the car with it off, so no down time.
Hope this helps.
Haven't gotten these codes yet, but I am curious. If a battery charger can cause this, what is it that the battery charger does, or doesn't do to cause problems?
Instructor
Joined: Mar 2014
Posts: 205
Likes: 0
From: Alpine TX
I can't answer this with first hand knowledge, but I read it on some other threads on this forum that there is a known issue about some battery chargers put out a signal or maybe it was a pulse of juice that is not compatible with electronics. I believe we are talking about something that can only be seen visually on an oscilloscope. I was also told that GM put out a bulletin on this matter, but I did not verify it by looking it up.
Hopefully someone else can chime in on this to clarify.
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Thread Starter
Burning Brakes
Joined: Nov 2002
Posts: 896
Likes: 3
From: Washington MO
Well, checked the grounds, and they were clean. No corrosion. So now its on to the ignition switch test and see what that shows.
I'm also curious as to why a battery charger would cause this problem. I did have to put my battery charged on my car about a week after I had it, because I was cleaning it and had the stereo on and the battery drained to the point it wouldn't start the car.But that was 3 weeks before my codes appeared.
I'm also curious as to why a battery charger would cause this problem. I did have to put my battery charged on my car about a week after I had it, because I was cleaning it and had the stereo on and the battery drained to the point it wouldn't start the car.But that was 3 weeks before my codes appeared.
Instructor
Joined: May 2014
Posts: 158
Likes: 0
From: Clinton Ontario
I can't answer this with first hand knowledge, but I read it on some other threads on this forum that there is a known issue about some battery chargers put out a signal or maybe it was a pulse of juice that is not compatible with electronics. I believe we are talking about something that can only be seen visually on an oscilloscope. I was also told that GM put out a bulletin on this matter, but I did not verify it by looking it up.
Hopefully someone else can chime in on this to clarify.
Hopefully someone else can chime in on this to clarify.
Cruising
Joined: Jun 2014
Posts: 10
Likes: 0
So I've had my new to me 02 EBM M6 vert for one month. Between the rainy weather and getting some paint work done, there hasn't been much seat time to enjoy it. So I get it back from the body shop Friday, spend all weekend in my shop detailing it to my liking. Get off work today, sun is shining, car is clean, time for a cruise... Until...
I start the car and right away I get an ABS light and a TC light along with the codes, they are;
PCM P1571 ASR Desired Torque
28 TCS No Comm.
58 SDM U1040 H C
Been searching the forum and found several threads about the same codes, but no one seems to post their fixes.
This is just really frustrating, especially with the holiday weekend coming up.
Anyone had a proven solution for this issue? Help is greatly appreciated.
Thanks.
I start the car and right away I get an ABS light and a TC light along with the codes, they are;
PCM P1571 ASR Desired Torque
28 TCS No Comm.
58 SDM U1040 H C
Been searching the forum and found several threads about the same codes, but no one seems to post their fixes.
This is just really frustrating,
especially with the holiday weekend coming up.Anyone had a proven solution for this issue? Help is greatly appreciated.
Thanks.
Thread Starter
Burning Brakes
Joined: Nov 2002
Posts: 896
Likes: 3
From: Washington MO
I just don't understand how I can drive the car home from the body shop(about 4 miles)with no codes present, park in on the lift in my shop for 2 days of detailing and then start it up and have this major problem. And the car was not even started up the whole time it was on my lift. It just doesn't make any sense to me. Frustrating as hell!
Thread Starter
Burning Brakes
Joined: Nov 2002
Posts: 896
Likes: 3
From: Washington MO
Just curious, if I take it to the dealer would they be able to read my car with a Tech II and be able to tell me exactly what part is bad? I hate to just keep throwing parts on it until I get lucky enough to fix the problem.
Thread Starter
Burning Brakes
Joined: Nov 2002
Posts: 896
Likes: 3
From: Washington MO
Suggest you read the following thread if you have NOT already done so:
http://forums.corvetteforum.com/c5-t...ake-pedal.html
Unless you have lots of money to throw away, I would not try the dealership. JMHO...
http://forums.corvetteforum.com/c5-t...ake-pedal.html
Unless you have lots of money to throw away, I would not try the dealership. JMHO...
The link above sounds exactly like what I'm going thru. I'll be following it closely.
Thread Starter
Burning Brakes
Joined: Nov 2002
Posts: 896
Likes: 3
From: Washington MO
Ok. After replacing a known "bad" battery and cleaning all my grounds and replacing the ignition switch - which did have burnt contacts, but didn't fix my problem - I removed my EBCM and sent if off to absfixers to have it checked. Brandon checked it and informed me that it was indeed not fixable, so he sent me one of his refurbed units. Installed the refurbed unit last week Thursday, car started right up with no codes and T/C working normally. Have been driving the car around all weekend with no issues so I'm happy once again. Kudos to Brandon at absfixers!! Thanks Brandon!
Instructor
Joined: Mar 2014
Posts: 205
Likes: 0
From: Alpine TX
Ok. After replacing a known "bad" battery and cleaning all my grounds and replacing the ignition switch - which did have burnt contacts, but didn't fix my problem - I removed my EBCM and sent if off to absfixers to have it checked. Brandon checked it and informed me that it was indeed not fixable, so he sent me one of his refurbed units. Installed the refurbed unit last week Thursday, car started right up with no codes and T/C working normally. Have been driving the car around all weekend with no issues so I'm happy once again. Kudos to Brandon at absfixers!! Thanks Brandon!
Instructor
Joined: Jul 2014
Posts: 184
Likes: 153
From: Jasper, GA
Ok. After replacing a known "bad" battery and cleaning all my grounds and replacing the ignition switch - which did have burnt contacts, but didn't fix my problem - I removed my EBCM and sent if off to absfixers to have it checked. Brandon checked it and informed me that it was indeed not fixable, so he sent me one of his refurbed units. Installed the refurbed unit last week Thursday, car started right up with no codes and T/C working normally. Have been driving the car around all weekend with no issues so I'm happy once again. Kudos to Brandon at absfixers!! Thanks Brandon!
Thread Starter
Burning Brakes
Joined: Nov 2002
Posts: 896
Likes: 3
From: Washington MO