GM Service Manual Online
For 1990-2009 cars only

DTC

Description

DTC C1214

DTC C1214 Brake Control Relay Contact Circuit Open

DTC C1215

DTC C1215 Brake Control Relay Contact Circuit Active

DTC C1216

DTC C1216 Brake Control Relay Coil Circuit Open

DTC C1217

DTC C1217 Brake Control Relay Coil Circuit Short to Ground

DTC C1218

DTC C1218 Brake Control Relay Coil Circuit Short to Voltage

DTC C1221

DTC C1221 LF Wheel Speed Sensor Input Signal is 0

DTC C1222

DTC C1222 RF Wheel Speed Sensor Input Signal is 0

DTC C1223

DTC C1223 LR Wheel Speed Sensor Input Signal is 0

DTC C1224

DTC C1224 RR Wheel Speed Sensor Input Signal is 0

DTC C1225

DTC C1225 LF Excessive Wheel Speed Variation

DTC C1226

DTC C1226 RF Excessive Wheel Speed Variation

DTC C1227

DTC C1227 LR Excessive Wheel Speed Variation

DTC C1228

DTC C1228 RR Excessive Wheel Speed Variation

DTC C1232

DTC C1232 LF Wheel Speed Circuit Open or Shorted

DTC C1233

DTC C1233 RF Wheel Speed Circuit Open or Shorted

DTC C1234

DTC C1234 LR Wheel Speed Circuit Open or Shorted

DTC C1235

DTC C1235 RR Wheel Speed Circuit Open or Shorted

DTC C1236

DTC C1236 Low System Supply Voltage

DTC C1237

DTC C1237 High System Supply Voltage

DTC C1238

DTC C1238 Left Front ESB Does Not Hold Motor

DTC C1241

DTC C1241 Right Front ESB Does Not Hold Motor

DTC C1242

DTC C1242 Rear ESB Does Not Hold Motor

DTC C1243

DTC C1243 Variable Effort Steering Steering Wheel Sensor Circuit Malfunction

DTC C1244

DTC C1244 Left Front ABS Channel Does Not Move

DTC C1245

DTC C1245 Right Front ABS Channel Does Not Move

DTC C1246

DTC C1246 Rear ABS Channel Does Not Move

DTC C1247

DTC C1247 Left Front ABS Motor Free Spins

DTC C1248

DTC C1248 Right Front ABS Motor Free Spins

DTC C1251

DTC C1251 Rear ABS Motor Free Spins

DTC C1252

DTC C1252 LF ABS Channel in Release Too Long

DTC C1253

DTC C1253 RF ABS Channel in Release Too Long

DTC C1254

DTC C1254 Rear ABS Channel in Release Too Long

DTC C1255

DTC C1255 EBCM Internal Malfunction

DTC C1256

DTC C1256 Left Front ABS Motor Circuit Open

DTC C1257

DTC C1257 LF ABS Motor Circuit Shorted to Ground

DTC C1258

DTC C1258 LF ABS Motor Circuit Shorted to Voltage

DTC C1261

DTC C1261 Right Front ABS Motor Circuit Open

DTC C1262

DTC C1262 RF ABS Motor Circuit Shorted to Ground

DTC C1263

DTC C1263 RF ABS Motor Circuit Shorted to Voltage

DTC C1264

DTC C1264 Rear ABS Motor Circuit Open

DTC C1265

DTC C1265 Rear ABS Motor Circuit Shorted to Ground

DTC C1266

DTC C1266 Rear ABS Motor Circuit Shorted to Voltage

DTC C1267

DTC C1267 DTC U1300 Previously Set

DTC C1268

DTC C1268 DTC U1301 Previously Set

DTC C1273

DTC C1273 VES Circuit Open or Shorted to Ground

DTC C1274

DTC C1274 VES Circuit Shorted to Voltage

DTC C1275

DTC C1275 PCM Requested ETS to Be Disabled

DTC C1276

DTC C1276 LF Solenoid Circuit Open or Short to Ground

DTC C1277

DTC C1277 LF Solenoid Circuit Shorted to Voltage

DTC C1278

DTC C1278 RF Solenoid Circuit Open or Shorted to Ground

DTC C1281

DTC C1281 RF Solenoid Circuit Shorted to Voltage

DTC C1282

DTC C1282 Calibration Malfunction

DTC C1286

DTC C1286 EBCM Turned On Brake Warning Indicator

DTC C1291

DTC C1291 Open Brake Lamp Switch Contacts During Deceleration

DTC C1292

DTC C1292 Open Brake Lamp Switch When ABS Was Required

DTC C1293

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

DTC C1294

DTC C1294 Brake Lamp Switch Circuit Always Active

DTC C1295

DTC C1295 Brake Lamp Switch Circuit Open

DTC U1016

DTC U1016 Loss of Communications with PCM in Data Link Communications

DTC U1255

DTC U1255 Class 2 Communication Malfunction in Data Link Communications

DTC U1300

DTC U1300 Class 2 Data Link Low in Data Link Communications

DTC U1301

DTC U1301 Class 2 Data Link High in Data Link Communications