DTC Codes, need help with meanings.
Thread Starter
Le Mans Master
Joined: May 2008
Posts: 5,892
Likes: 47
From: Helotes TEXAS
DTC Codes, need help with meanings.
These are the codes showing on my cluster display:
28-TCS
DTC C1233 RF Wheel Speed Circuit Open or Shorted - possible dead wheel sensor
DTC C1243 BPMV Pump Motor Stalled - ???
DTC C1277 Requested Torque Signal Circuit Malfunction - even bigger ?????
I'm pretty sure these were due to a dying or dead battery.
AO-LDCM
DTC B2282 Battery #1 Circuit
DTC B2284 Battery #2 Circuit
A1-RDCM
DTC B2283 Battery #1 Circuit
DTC B2285 Battery #2 Circuit
28-TCS
DTC C1233 RF Wheel Speed Circuit Open or Shorted - possible dead wheel sensor
DTC C1243 BPMV Pump Motor Stalled - ???
DTC C1277 Requested Torque Signal Circuit Malfunction - even bigger ?????
I'm pretty sure these were due to a dying or dead battery.
AO-LDCM
DTC B2282 Battery #1 Circuit
DTC B2284 Battery #2 Circuit
A1-RDCM
DTC B2283 Battery #1 Circuit
DTC B2285 Battery #2 Circuit
Team Owner
Joined: May 2001
Posts: 36,836
Likes: 244
From: Dear Karma, I have a list of people you missed.
St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15-'16
The LDCM and RDCM messages are likely battery related. Low battery or bad battery or loose or corroded battery connections.
The TCS codes could be the result of a bad EBCM or they could also be corroded connections or grounds.
Here's a thread with some info about C1243 worth reading.
For code C1233 I'd pull the wheel, separate the connector to the wheel speed sensor and look at the condition of the contacts. I'll bet that on a 2000 year C5 they are corroded or damaged. I'd also check the connectors on the other 3 wheels while I was at it.
For the C1277 code, have you cleared this code and does it return???? htere is plenty of reading if you do an extended search co C1277 in both title and text . Could be a battery issue, could be a ground at the EBCM, could be a ground at the PCM or could be a damaged wire at the EBCM or it could be a bad EBCM.
Given the commonality of grounds for the TCS codes you have, Id read the Bill Curlee thread about grounds and spend some time cleaning the many that are on the car:
http://forums.corvetteforum.com/c5-t...tion-long.html
The TCS codes could be the result of a bad EBCM or they could also be corroded connections or grounds.
Here's a thread with some info about C1243 worth reading.
For code C1233 I'd pull the wheel, separate the connector to the wheel speed sensor and look at the condition of the contacts. I'll bet that on a 2000 year C5 they are corroded or damaged. I'd also check the connectors on the other 3 wheels while I was at it.
For the C1277 code, have you cleared this code and does it return???? htere is plenty of reading if you do an extended search co C1277 in both title and text . Could be a battery issue, could be a ground at the EBCM, could be a ground at the PCM or could be a damaged wire at the EBCM or it could be a bad EBCM.
Given the commonality of grounds for the TCS codes you have, Id read the Bill Curlee thread about grounds and spend some time cleaning the many that are on the car:
http://forums.corvetteforum.com/c5-t...tion-long.html
Good tips. 
Check your battery connections not only at the battery itself of course, but also at the pos. connection on the starter solenoid. There's been more than one guy that has found their's slightly loose. If your making a battery decision soon, I can recommend the Sears Die-Hard Platinum P-4. It's an AGM unit made by the folks at Enersys in Missouri that mfr the Odyssey brand.
Thread Starter
Le Mans Master
Joined: May 2008
Posts: 5,892
Likes: 47
From: Helotes TEXAS
Well guys, I replaced the battery at the first of the year. It died one moring when I went out to turn the car on.
As for the other codes, I guess I'll be doing some reading.
As for the other codes, I guess I'll be doing some reading.
Tech Contributor
Joined: Dec 2006
Posts: 10,962
Likes: 29
From: Van Buren Arkansas
Wounded Warrior Escort '11
Let me toss in here to about the 1243 code. I had that happen to me as well. I followed the forum suggestions for manually powering the BPMV motor and it spun slow at first then picked up speed within a few tries. After putting things back together, I found that I still got the code about once out of every three times of starting up. I went back and did the manual power thing to the BPMV again yet it ran at full speed...so I measured the battery and it was at 12.6vdc static. Knowing that and its age of several years, I replaced the battery and now the 1243 code is gone.
I can't say that your issue is the battery but pairing the door control module codes that do indicate a low battery and the 1243 code, you might want to replace your battery, clear all codes, then see what comes back the next cold start.
I can't say that your issue is the battery but pairing the door control module codes that do indicate a low battery and the 1243 code, you might want to replace your battery, clear all codes, then see what comes back the next cold start.
