Codes On This Corvette
Thread Starter
Intermediate
Joined: Aug 2010
Posts: 31
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Codes On This Corvette
Im looking at a 99 with these codes on the readout:
C1277H
U1096H
U1160H
B228H
B238H
The dealer said they just put in a new battery. Could that be the cause? If not what do these things mean?
They also say these things are not "serious".
Thanks!
C1277H
U1096H
U1160H
B228H
B238H
The dealer said they just put in a new battery. Could that be the cause? If not what do these things mean?
They also say these things are not "serious".
Thanks!
Last edited by bronsin; Aug 31, 2010 at 01:41 PM.
Le Mans Master
Joined: Nov 2005
Posts: 6,993
Likes: 25
Thread Starter
Intermediate
Joined: Aug 2010
Posts: 31
Likes: 0
OK. The dealer took the car to the Chevy dealership next store and they cleared the codes. They said it "wasnt serious". Im going to drive the car again tomorrow and we'll see whats what.
Last edited by bronsin; Aug 31, 2010 at 02:44 PM.
Le Mans Master
Joined: Nov 2005
Posts: 6,993
Likes: 25
Thread Starter
Intermediate
Joined: Aug 2010
Posts: 31
Likes: 0
Right. But I didnt know about C and H codes so I wouldnt have known to clear the H codes and investigate the C ones. None of the codes appear to be something that would be much of a concern. Except maybe C1277 because I dont know what that means. If it comes back.
Im a former ECHO driver anyway.
Im a former ECHO driver anyway.
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Burning Brakes
Joined: Jan 2006
Posts: 1,170
Likes: 27
From: Magnolia Greens NC
C1277 Code
The Electronic Brake Control Module (EBCM) has software in it for performing Traction Control. One way it does this is by requesting the Powertrain Control Module (PCM) to deliver less engine torque, allowing the rear wheels to regain traction. This is done using two signals .... one from the EBCM to the PCM that is a "requested torque" signal ..... the other is a signal from the PCM to the EBCM that is a "delivered torque" signal.
The C1277 is set by the EBCM when it receives an invalid delivered torque signal, or no signal at all.
These are indicative of either bad EBCM grounds, or wiring corrosion on the connectors to the EBCM and/or PCM.
The EBCM is grounded at two points, G103 and G108. One is on the frame rail just behind the location of the EBCM, the other is on the frame rail near the battery NEG cable attachment.
I'd clean both those grounds very carefully, and see if that eliminates that code. See Bill Curlee's excellent sticky at the top of this C5 Tech forum for more on cleaning grounds.
The C1277 is set by the EBCM when it receives an invalid delivered torque signal, or no signal at all.
These are indicative of either bad EBCM grounds, or wiring corrosion on the connectors to the EBCM and/or PCM.
The EBCM is grounded at two points, G103 and G108. One is on the frame rail just behind the location of the EBCM, the other is on the frame rail near the battery NEG cable attachment.
I'd clean both those grounds very carefully, and see if that eliminates that code. See Bill Curlee's excellent sticky at the top of this C5 Tech forum for more on cleaning grounds.
Le Mans Master
Joined: Nov 2005
Posts: 6,993
Likes: 25
I doubt your going to "fix" anything here, EBCM problems generally mean removing and sending it away or getting a NEW one. You may nat even have a problem here.
Burning Brakes
Joined: Jan 2006
Posts: 1,170
Likes: 27
From: Magnolia Greens NC
"dealer replaced battery"....
...you said that...so, check the Negative - battery terminal connection for proper torque and where it is grounded to the nearby frame for continuity...then clear that C1277 code & see if it returns.. (dealer installation of that new battery MAY have triggered this code, especially if the ground or battery connection is not sound)
