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.
2001 Buick Century CustomFACTORY OEM SERVICE PROCEDURE
Anti-Lock Brake DTCS
ANTI-LOCK BRAKE DIAGNOSTIC TROUBLE CODE (DTC) LIST
| DTC | Definition |
|---|---|
| C1214 | Solenoid Valve Relay Contact Or Coil Circuit Open |
| C1217 | Pump Motor Shorted To Ground |
| C1218 | Pump Motor Shorted To Voltage |
| C1221 | Wheel Speed Sensor Input Signal Is Zero |
| C1222 | Wheel Speed Sensor Input Signal Is Zero |
| C1223 | Wheel Speed Sensor Input Signal Is Zero |
| C1224 | Wheel Speed Sensor Input Signal Is Zero |
| C1225 | Rapid Variation In Wheel Speed Sensor |
| C1226 | Rapid Variation In Wheel Speed Sensor |
| C1227 | Rapid Variation In Wheel Speed Sensor |
| C1228 | Rapid Variation In Wheel Speed Sensor |
| C1232 | Wheel Speed Sensor Short To Voltage Or Ground, Or Open |
| C1233 | Wheel Speed Sensor Short To Voltage Or Ground, Or Open |
| C1234 | Wheel Speed Sensor Short To Voltage Or Ground, Or Open |
| C1235 | Wheel Speed Sensor Short To Voltage Or Ground, Or Open |
| C1236 | Low System Supply Voltage |
| C1237 | High System Supply Voltage |
| C1238 | Brake Rotor Temperatures Have Exceeded Thermal Cutoff Point ("W" Body) |
| C1242 | BPMV Pump Motor Circuit Open |
| C1243 | BPMV Pump Motor Circuit Open |
| C1248 | DRP Circuit Malfunction ("W" Body) |
| C1254 | Abnormal Shutdown Detected |
| C1255 | EBCM Internal Malfunction |
| C1256 | EBCM Internal Malfunction |
| C1271 | Commanded State Of Driver And Actual State Of Control Circuit Does Not Match ("W" Body) |
| C1272 | Commanded State Of Driver And Actual State Of Control Circuit Does Not Match ("W" Body) |
| C1273 | Commanded State Of Driver And Actual State Of Control Circuit Does Not Match ("W" Body) |
| C1274 | Commanded State Of Driver And Actual State Of Control Circuit Does Not Match ("W" Body) |
| C1275 | PCM Requested ETS Disabled |
| C1276 | EBCM Or PCM Detects Delivered Torque Signal Is Out Of Valid Range ("W" Body) |
| C1277 | Requested Torque Signal Malfunction ("W" Body) |
| C1278 | TCS Temporarily Inhibited By PCM |
| C1295 | Brakelight Switch Circuit Open |
| P1571 | Requested Torque Signal Malfunction ("W" Body) |
| P1644 | EBCM Or PCM Detects Delivered Torque Signal Is Out Of Valid Range ("W" Body) |
| P1689 | EBCM Or PCM Detects Delivered Torque Signal Is Out Of Valid Range ("W" Body) |
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.
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.