GM Service Manual Online
For 1990-2009 cars only

DTC

Definition

DTC C0221

DTC C0221 or C021 RF Wheel Speed Sensor Circuit Open

DTC C0222

DTC C0222 or C022 RF Wheel Speed Signal Missing

DTC C0223

DTC C0223 or C023 RF Wheel Speed Signal Erratic

DTC C0225

DTC C0225 or C025 LF Wheel Speed Sensor Circuit Open

DTC C0226

DTC C0226 or C026 LF Wheel Speed Signal Missing

DTC C0227

DTC C0227 or C027 LF Wheel Speed Signal Erratic

DTC C0229

DTC C0229 or C029 Drop Out of Front Wheel Speed Signals

DTC C0235

DTC C0235 or C035 Rear Wheel Speed Signal Circuit Open

DTC C0236

DTC C0236 or C036 Rear Wheel Speed Signal Circuit Missing

DTC C0237

DTC C0237 or C037 Rear Wheel Speed Signal Erratic

DTC C0238

DTC C0238 or C038 Wheel Speed Mismatch

DTC C0241

DTC C0241-C0254 or C041-C054 EBCM Control Valve Circuit

DTC C0242

DTC C0241-C0254 or C041-C054 EBCM Control Valve Circuit

DTC C0243

DTC C0241-C0254 or C041-C054 EBCM Control Valve Circuit

DTC C0244

DTC C0241-C0254 or C041-C054 EBCM Control Valve Circuit

DTC C0245

DTC C0241-C0254 or C041-C054 EBCM Control Valve Circuit

DTC C0246

DTC C0241-C0254 or C041-C054 EBCM Control Valve Circuit

DTC C0247

DTC C0241-C0254 or C041-C054 EBCM Control Valve Circuit

DTC C0248

DTC C0241-C0254 or C041-C054 EBCM Control Valve Circuit

DTC C0251

DTC C0241-C0254 or C041-C054 EBCM Control Valve Circuit

DTC C0252

DTC C0241-C0254 or C041-C054 EBCM Control Valve Circuit

DTC C0253

DTC C0241-C0254 or C041-C054 EBCM Control Valve Circuit

DTC C0254

DTC C0241-C0254 or C041-C054 EBCM Control Valve Circuit

DTC C0265

DTC C0265 or C0266 and C065 C066 EBCM Relay Circuit

DTC C0266

DTC C0265 or C0266 and C065 C066 EBCM Relay Circuit

DTC C0267

DTC C0267 or C0268 and C067 or C068 Pump Motor Circuit Open/Shorted

DTC C0268

DTC C0267 or C0268 and C067 or C068 Pump Motor Circuit Open/Shorted

DTC C0271

DTC C0271-C0273 or C071 or C073 EBCM Malfunction

DTC C0272

DTC C0271-C0273 or C071 or C073 EBCM Malfunction

DTC C0273

DTC C0271-C0273 or C071 or C073 EBCM Malfunction

DTC C0274

DTC C0269 or C0274 and C069 or C074 Excessive Dump/Isolation Time

DTC C0281

DTC C0281 or C081 Brake Switch Circuit

DTC C0286

DTC C0286 or C086 ABS Indicator Lamp Circuit Shorted to B+

DTC C0288

DTC C0288 or C088 Brake Warning Lamp Circuit Shorted to B+