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.
2015 Toyota Corolla LEFACTORY OEM SERVICE PROCEDURE
Anti-Lock Brake System
ANTI-LOCK BRAKE SYSTEM DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION [04/2014 - 08/2016]
| DTC Code | Description |
|---|---|
| C1241 | Low Power Supply Voltage Malfunction |
| C1271 | Low Output Signal of Front Speed Sensor RH (Test Mode DTC) |
| C1272 | Low Output Signal of Front Speed Sensor LH (Test Mode DTC) |
| C1273 | Low Output Signal of Rear Speed Sensor RH (Test Mode DTC) |
| C1274 | Low Output Signal of Rear Speed Sensor LH (Test Mode DTC) |
| C1275 | Abnormal Change in Output Signal of Front Speed Sensor RH (Test Mode DTC) |
| C1276 | Abnormal Change in Output Signal of Front Speed Sensor LH (Test Mode DTC) |
| C1277 | Abnormal Change in Output Signal of Rear Speed Sensor RH (Test Mode DTC) |
| C1278 | Abnormal Change in Output Signal of Rear Speed Sensor LH (Test Mode DTC) |
| C1401 | Front Speed Sensor RH Malfunction |
| C1402 | Front Speed Sensor LH Malfunction |
| C1403 | Rear Speed Sensor RH Malfunction |
| C1404 | Rear Speed Sensor LH Malfunction |
| C1405 | Open or Short in Front Speed Sensor RH Circuit |
| C1406 | Open or Short in Front Speed Sensor LH Circuit |
| C1407 | Open or Short in Rear Speed Sensor RH Circuit |
| C1408 | Open or Short in Rear Speed Sensor LH Circuit |
| C1413 | Front Speed Sensor RH Output Malfunction |
| C1414 | Front Speed Sensor LH Output Malfunction |
| C1415 | Rear Speed Sensor RH Output Malfunction |
| C1416 | Rear Speed Sensor LH Output Malfunction |
| C1417 | High Power Supply Voltage Malfunction |
| C1425 | Open in Stop Light Switch Circuit |
| C1427 | Motor Malfunction |
| C1428 | Motor Circuit Malfunction |
| C1468 | SFR Solenoid Circuit |
| C1469 | SFL Solenoid Circuit |
| C146A | SRR Solenoid Circuit |
| C146B | SRL Solenoid Circuit |
| C146C | Open in ABS Motor Relay Circuit |
| C146D | Short in ABS Motor Relay Circuit |
| C146E | Open in ABS Solenoid Relay Circuit |
| C146F | Short in ABS Solenoid Relay Circuit |
| U0073 | Control Module Communication Bus OFF |
ANTI-LOCK BRAKE SYSTEM DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION [08/2016 - 08/2017]
| DTC Code | Description |
|---|---|
| C1241 | Low Power Supply Voltage Malfunction |
| C1271 | Low Output Signal of Front Speed Sensor RH (Test Mode DTC) |
| C1272 | Low Output Signal of Front Speed Sensor LH (Test Mode DTC) |
| C1273 | Low Output Signal of Rear Speed Sensor RH (Test Mode DTC) |
| C1274 | Low Output Signal of Rear Speed Sensor LH (Test Mode DTC) |
| C1275 | Abnormal Change in Output Signal of Front Speed Sensor RH (Test Mode DTC) |
| C1276 | Abnormal Change in Output Signal of Front Speed Sensor LH (Test Mode DTC) |
| C1277 | Abnormal Change in Output Signal of Rear Speed Sensor RH (Test Mode DTC) |
| C1278 | Abnormal Change in Output Signal of Rear Speed Sensor LH (Test Mode DTC) |
| C1401 | Front Speed Sensor RH Malfunction |
| C1402 | Front Speed Sensor LH Malfunction |
| C1403 | Rear Speed Sensor RH Malfunction |
| C1404 | Rear Speed Sensor LH Malfunction |
| C1405 | Open or Short in Front Speed Sensor RH Circuit |
| C1406 | Open or Short in Front Speed Sensor LH Circuit |
| C1407 | Open or Short in Rear Speed Sensor RH Circuit |
| C1408 | Open or Short in Rear Speed Sensor LH Circuit |
| C1413 | Front Speed Sensor RH Output Malfunction |
| C1414 | Front Speed Sensor LH Output Malfunction |
| C1415 | Rear Speed Sensor RH Output Malfunction |
| C1416 | Rear Speed Sensor LH Output Malfunction |
| C1417 | High Power Supply Voltage Malfunction |
| C1425 | Open in Stop Light Switch Circuit |
| C1427 | Motor Malfunction |
| C1428 | Motor Circuit Malfunction |
| C1468 | SFR Solenoid Circuit |
| C1469 | SFL Solenoid Circuit |
| C146A | SRR Solenoid Circuit |
| C146B | SRL Solenoid Circuit |
| C146C | Open in ABS Motor Relay Circuit |
| C146D | Short in ABS Motor Relay Circuit |
| C146E | Open in ABS Solenoid Relay Circuit |
| C146F | Short in ABS Solenoid Relay Circuit |
| U0073 | Control Module Communication Bus OFF |
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.
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