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 Chevrolet Impala LSFACTORY OEM SERVICE PROCEDURE
Anti-Lock Brake DTCS
ANTI-LOCK BRAKE DELPHI DBC 7 DIAGNOSTIC TROUBLE CODE (DTC) LIST
| DTC | Description |
|---|---|
| DTC B2747 | TRACTION OFF INDICATOR ILLUMINATED |
| DTC C1214 | SYSTEM RELAY CONTACT OR COIL CIRCUIT OPEN |
| DTC C1216 | EBCM UNABLE TO DECREASE BRAKE PRESSURE TO PREVENT EXCESSIVE WHEEL SLIP |
| DTC C1217 | PUMP MOTOR SHORTED TO GROUND |
| DTC C1218 | PUMP MOTOR SHORTED TO VOLTAGE OR MOTOR GROUND OPEN |
| DTC C1221, DTC C1222, DTC C1223, DTC C1224, DTC C1225, C1226, C1227, C1228, DTC C1232, C1233, C1234, C1235 | DTC C1221-C1224: WHEEL SPEED SENSOR INPUT SIGNAL IS ZERO DTC C1225-C1228: RAPID VARIATION IN WHEEL SPEED SENSOR DTC C1232-C1235: WHEEL SPEED SENSOR SHORT TO VOLTAGE OR GROUND, OR OPEN |
| DTC C1236 | LOW SYSTEM SUPPLY VOLTAGE |
| DTC C1237 | HIGH SYSTEM SUPPLY VOLTAGE |
| DTC C1238 | BRAKE ROTOR TEMPERATURES HAVE EXCEEDED THERMAL CUTOFF POINT |
| DTC C1242 OR DTCC1243 | BPMV PUMP MOTOR CIRCUIT OPEN |
| DTC C1248 | DYNAMIC REAR PROPORTIONING (DRP) CIRCUIT MALFUNCTION |
| DTC C1254 | ABNORMAL SHUTDOWN DETECTED |
| DTC C1255 OR DTC C1256 | EBCM INTERNAL MALFUNCTION |
| DTC C1271, DTC C1272, DTC C1273, DTC C1274 | COMMANDED STATE OF DRIVER AND ACTUAL STATE OF CONTROL CIRCUIT DOES NOT MATCH |
| DTC C1275 | PCM REQUESTED ETS DISABLED |
| DTC C1276, DTC P1644 OR DTC P1689 | EBCM OR PCM DETECTS DELIVERED TORQUE SIGNAL IS OUT OF VALID RANGE |
| DTC C1277 OR DTC P1571 | REQUESTED TORQUE SIGNAL MALFUNCTION |
| DTC C1278 | TCS TEMPORARILY INHIBITED BY PCM |
| DTC C1291, C1293 | DTC 1291: BRAKELIGHT SWITCH REMAINS OPEN FOR 3 DECELERATION CYCLES OR DTC C1293: DTC C1291 WAS SET IN PREVIOUS IGNITION CYCLE |
| DTC C1294 | BRAKELIGHT SWITCH INPUT ACTIVE FOR 2 CONSECUTIVE IGNITION CYCLES |
| DTC C1295 | BRAKELIGHT SWITCH CIRCUIT OPEN |
Factory Service Tools
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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.