Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2003 Buick Century BaseFACTORY OEM SERVICE PROCEDURE
Anti-Lock Brake DTCS
ANTI-LOCK BRAKE DIAGNOSTIC TROUBLE CODE (DTCS) LIST
| DTC | Description |
|---|---|
| DTC B2747 | TCS Switch Signal Circuit Malfunction |
| DTC C1214 | System Relay Contact or Coil Circuit Open |
| DTC C1216 | Brake Control Relay Coil Circuit Open |
| DTC C1217 | Pump Motor Shorted to Ground |
| DTC C1218 | Pump Motor Circuit Shorted to Voltage or Motor Ground Open |
| DTC C1221, C1222, C1223, C1224, C1225, C1226, C1227, C1228, C1232, C1233, C1234, C1235 | Wheel Speed Sensor Fault |
| DTC C1236 | Low System Supply Voltage |
| DTC 1237 | High System Supply Voltage |
| DTC C1238 | Brake Thermal Model Exceeded |
| DTC C1242, C1243 | Pump Motor Circuit Open & BPMV Pump Motor Stalled |
| DTC C1248 | EBCM Turned the Red Brake Warning Indicator On |
| DTC C1254 | Abnormal Shutdown Detected |
| DTC C1255, C1256 | EBCM Internal Malfunction |
| DTC C1261, C1262, C1263, C1264, C1265, C1266, C1267, C1268, C1271, C1272, C1273, C1274 | Valve Solenoid Malfunction |
| DTC C1275 | PCM Requested ETS to Be Disabled |
| DTC C1276, P1644, P1689 | Delivered Torque Signal Circuit Malfunction & Traction Control Delivered Torque Output Circuit |
| DTC C1277, P1571 | Requested Torque Signal Circuit Malfunction & Traction Control Torque Request Circuit |
| DTC C1278 | TCS Temporarily Inhibited By PCM |
| DTC C1291 | Open Brake Lamp Switch Contacts During Deceleration |
| DTC C1294 | Brake Lamp Switch Circuit Always Active |
| DTC C1295 | Brake Lamp Switch Circuit Open |
Factory Service Tools
Use the Manual With the Right Hardware
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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