GM Service Manual Online
For 1990-2009 cars only

DTC Number/Description

DTC C1214 Brake Control Relay Contact Circuit Open

DTC C1215 Brake Control Relay Contact Circuit Active

DTC C1216 Brake Control Relay Coil Circuit Open

DTC C1217 Brake Control Relay Coil Circuit Short to Ground

DTC C1218 Brake Control Relay Coil Circuit Short to Voltage

DTC C1221 LF Wheel Speed Sensor Input Signal is 0

DTC C1222 RF Wheel Speed Sensor Input Signal is 0

DTC C1223 LR Wheel Speed Sensor Input Signal is 0

DTC C1224 RR Wheel Speed Sensor Input Signal is 0

DTC C1225 LF Excessive Wheel Speed Variation

DTC C1226 RF Excessive Wheel Speed Variation

DTC C1227 LR Excessive Wheel Speed Variation

DTC C1228 RR Excessive Wheel Speed Variation

DTC C1232 LF Wheel Speed Circuit Open or Shorted

DTC C1233 RF Wheel Speed Circuit Open or Shorted

DTC C1234 LR Wheel Speed Circuit Open or Shorted

DTC C1235 RR Wheel Speed Circuit Open or Shorted

DTC C1236 Low System Supply Voltage

DTC C1237 High System Supply Voltage

DTC C1238 Left Front ESB Does Not Hold Motor

DTC C1241 Right Front ESB Does Not Hold Motor

DTC C1242 Rear ESB Does Not Hold Motor

DTC C1244 Left Front ABS Channel Does Not Move

DTC C1245 Right Front ABS Channel Does Not Move

DTC C1246 Rear ABS Channel Does Not Move

DTC C1247 Left Front ABS Motor Free Spins

DTC C1248 Right Front ABS Motor Free Spins

DTC C1251 Rear ABS Motor Free Spins

DTC C1252 LF ABS Channel in Release Too Long

DTC C1253 RF ABS Channel in Release Too Long

DTC C1254 Rear ABS Channel in Release Too Long

DTC C1255 EBCM/EBTCM Internal Malfunction

DTC C1256 Left Front ABS Motor Circuit Open

DTC C1257 LF ABS Motor Circuit Shorted to Ground

DTC C1258 LF ABS Motor Circuit Shorted to Voltage

DTC C1261 Right Front ABS Motor Circuit Open

DTC C1262 RF ABS Motor Circuit Shorted to Ground

DTC C1263 RF ABS Motor Circuit Shorted to Voltage

DTC C1264 Rear ABS Motor Circuit Open

DTC C1265 Rear ABS Motor Circuit Shorted to Ground

DTC C1266 Rear ABS Motor Circuit Shorted to Voltage

DTC C1275 Serial Data Malfunction

DTC C1276 LF Solenoid Circuit Open or Shorted to Voltage

DTC C1277 LF Solenoid Circuit Shorted to Voltage

DTC C1278 RF Solenoid Circuit Open or Shorted to Ground

DTC C1281 RF Solenoid Circuit Shorted to Voltage

DTC C1282 Calibration Malfunction

DTC C1286 EBCM/EBTCM Turned On Brake Warning Indicator

DTC C1287 Brake Warning Indicator Circuit Open or Shorted to Voltage

DTC C1291 Open Brake Lamp Switch Contacts During Deceleration

DTC C1292 Open Brake Lamp Switch When ABS Was Required

DTC C1293 DTC C1291/C1292 Set in Current or Previous Ignition Cycle

DTC C1294 Brake Lamp Switch Circuit Always Active

DTC C1295 Brake Lamp Switch Circuit Open