2012 Toyota Corolla Base, Automatic TransFACTORY OEM SERVICE PROCEDURE

Diagnostic Trouble Code Chart

NOTE:

Turn the ignition switch off before removing any parts.

HINT: 

  • If no malfunction is found when inspecting parts, inspect the skid control ECU and ground points for poor connect.
  • If a trouble code is displayed during the DTC check, check the circuit indicated by the DTC. For details of each code, refer to the service information for the respective DTC Code in the DTC chart.
  • When 2 or more DTCs are detected, perform circuit inspection one by one until the problem is identified.
  • For DTCs indicated by the warning light or indicator light, refer to the DTC charts in DTC Check/Clear.
  • Inspect the fuses and relays before investigating the trouble areas as shown in the table below.
ABS DTC

DTC Code Detection Item See
C0226 SFR Solenoid Circuit Refer to DTC C0226: SFR Solenoid Circuit; DTC C0236: SFL Solenoid Circuit; DTC C0246: SRR Solenoid Circuit; DTC C0256: SRL Solenoid Circuit; DTC C1225: SM Solenoid Circuit
C0236 SFL Solenoid Circuit Refer to DTC C0226: SFR Solenoid Circuit; DTC C0236: SFL Solenoid Circuit; DTC C0246: SRR Solenoid Circuit; DTC C0256: SRL Solenoid Circuit; DTC C1225: SM Solenoid Circuit
C0246 SRR Solenoid Circuit Refer to DTC C0226: SFR Solenoid Circuit; DTC C0236: SFL Solenoid Circuit; DTC C0246: SRR Solenoid Circuit; DTC C0256: SRL Solenoid Circuit; DTC C1225: SM Solenoid Circuit
C0256 SRL Solenoid Circuit Refer to DTC C0226: SFR Solenoid Circuit; DTC C0236: SFL Solenoid Circuit; DTC C0246: SRR Solenoid Circuit; DTC C0256: SRL Solenoid Circuit; DTC C1225: SM Solenoid Circuit
C0273*1 Open in ABS Motor Relay Circuit Refer to DTC C0273: Open in ABS Motor Relay Circuit; DTC C0274: Short in ABS Motor Relay Circuit; DTC C1361: Short in ABS Motor Fail Safe Relay Circuit
C0274 Short in ABS Motor Relay Circuit Refer to DTC C0273: Open in ABS Motor Relay Circuit; DTC C0274: Short in ABS Motor Relay Circuit; DTC C1361: Short in ABS Motor Fail Safe Relay Circuit
C0278 Open in ABS Solenoid Relay Circuit Refer to DTC C0278: Open in ABS Solenoid Relay Circuit; DTC C0279: Short in ABS Solenoid Relay Circuit
C0279 Short in ABS Solenoid Relay Circuit Refer to DTC C0278: Open in ABS Solenoid Relay Circuit; DTC C0279: Short in ABS Solenoid Relay Circuit
C1225 SM Solenoid Circuit Refer to DTC C0226: SFR Solenoid Circuit; DTC C0236: SFL Solenoid Circuit; DTC C0246: SRR Solenoid Circuit; DTC C0256: SRL Solenoid Circuit; DTC C1225: SM Solenoid Circuit
C1241 Low Power Supply Voltage Malfunction Refer to DTC C1241: Low Power Supply Voltage Malfunction
C1243*1 Acceleration Sensor Stuck Malfunction Refer to DTC C1232: Acceleration Sensor Stuck Malfunction; DTC C1243: Acceleration Sensor Stuck Malfunction; DTC C1245: Acceleration Sensor Output Malfunction
C1245*1 Acceleration Sensor Output Malfunction Refer to DTC C1232: Acceleration Sensor Stuck Malfunction; DTC C1243: Acceleration Sensor Stuck Malfunction; DTC C1245: Acceleration Sensor Output Malfunction
C1361 Short in ABS Motor Fail Safe Relay Circuit Refer to DTC C0273: Open in ABS Motor Relay Circuit; DTC C0274: Short in ABS Motor Relay Circuit; DTC C1361: Short in ABS Motor Fail Safe Relay Circuit
C1381 Acceleration Sensor Power Supply Voltage Malfunction Refer to DTC C1381: Acceleration Sensor Power Supply Voltage Malfunction
C1401*1 Front Speed Sensor RH Malfunction Refer to DTC C1401: Front Speed Sensor RH Malfunction; DTC C1402: Front Speed Sensor LH Malfunction
C1402*1 Front Speed Sensor LH Malfunction Refer to DTC C1401: Front Speed Sensor RH Malfunction; DTC C1402: Front Speed Sensor LH Malfunction
C1403*1 Rear Speed Sensor RH Malfunction Refer to DTC C1403: Rear Speed Sensor RH Malfunction; DTC C1404: Rear Speed Sensor LH Malfunction
C1404*1 Rear Speed Sensor LH Malfunction Refer to DTC C1403: Rear Speed Sensor RH Malfunction; DTC C1404: Rear Speed Sensor LH Malfunction
C1405*1 Open or Short in Front Speed Sensor RH Circuit Refer to DTC C1405: Open or Short in Front Speed Sensor RH Circuit; DTC C1406: Open or Short in Front Speed Sensor LH Circuit
C1406*1 Open or Short in Front Speed Sensor LH Circuit Refer to DTC C1405: Open or Short in Front Speed Sensor RH Circuit; DTC C1406: Open or Short in Front Speed Sensor LH Circuit
C1407*1 Open or Short in Rear Speed Sensor RH Circuit Refer to DTC C1407: Open or Short in Rear Speed Sensor RH Circuit; DTC C1408: Open or Short in Rear Speed Sensor LH Circuit
C1408*1 Open or Short in Rear Speed Sensor LH Circuit Refer to DTC C1407: Open or Short in Rear Speed Sensor RH Circuit; DTC C1408: Open or Short in Rear Speed Sensor LH Circuit
C1413*1 Front Speed Sensor RH Output Malfunction Refer to DTC C1413: Front Speed Sensor RH Output Malfunction; DTC C1414: Front Speed Sensor LH Output Malfunction
C1414*1 Front Speed Sensor LH Output Malfunction Refer to DTC C1413: Front Speed Sensor RH Output Malfunction; DTC C1414: Front Speed Sensor LH Output Malfunction
C1415*1 Rear Speed Sensor RH Output Malfunction Refer to DTC C1415: Rear Speed Sensor RH Output Malfunction; DTC C1416: Rear Speed Sensor LH Output Malfunction
C1416*1 Rear Speed Sensor LH Output Malfunction Refer to DTC C1415: Rear Speed Sensor RH Output Malfunction; DTC C1416: Rear Speed Sensor LH Output Malfunction
C1417 High Power Supply Voltage Malfunction Refer to DTC C1417: High Power Supply Voltage Malfunction
C1419 Acceleration Sensor Internal Circuit Refer to DTC C1419: Acceleration Sensor Internal Circuit; DTC C1435: Yaw Rate Sensor Internal Circuit
C1420 Acceleration Sensor Malfunction Refer to DTC C1420: Acceleration Sensor Malfunction
C1421*2 Open or Short in Master Cylinder Pressure Sensor Refer to DTC C1421: Open or Short in Master Cylinder Pressure Sensor; DTC C1423: Master Cylinder Pressure Sensor Zero Point Low Malfunction; DTC C1424: Master Cylinder Pressure Sensor Output Malfunction
C1422*2 Master Cylinder Pressure Sensor Zero Point High Malfunction Refer to DTC C1422: Master Cylinder Pressure Sensor Zero Point High Malfunction
C1423*2 Master Cylinder Pressure Sensor Zero Point Low Malfunction Refer to DTC C1421: Open or Short in Master Cylinder Pressure Sensor; DTC C1423: Master Cylinder Pressure Sensor Zero Point Low Malfunction; DTC C1424: Master Cylinder Pressure Sensor Output Malfunction
C1424*2 Master Cylinder Pressure Sensor Output Malfunction Refer to DTC C1421: Open or Short in Master Cylinder Pressure Sensor; DTC C1423: Master Cylinder Pressure Sensor Zero Point Low Malfunction; DTC C1424: Master Cylinder Pressure Sensor Output Malfunction
C1425*3 Open in Stop Light Switch Circuit Refer to DTC C1425: Open in Stop Light Switch Circuit
C1427*1 Motor Malfunction Refer to DTC C1427: Motor Malfunction
C1428*1 Motor Circuit Malfunction Refer to DTC C1428: Motor Circuit Malfunction
C1442 Invalid Data Received from Acceleration Sensor Refer to DTC C1442: Invalid Data Received from Acceleration Sensor; DTC C1443: Invalid Data Received from Yaw Rate Sensor
U0073 Control Module Communication Bus OFF Refer to DTC U0073: Control Module Communication Bus OFF; DTC U0100: Lost Communication with ECM / PCM; DTC U0123: Lost Communication with Yaw Rate Sensor Module; DTC U0124: Lost Communication with Lateral Acceleration Sensor Module; DTC U0126: Lost Communication with Steering Angle Sensor Module
U0124 Lost Communication with Lateral Acceleration Sensor Module Refer to DTC U0073: Control Module Communication Bus OFF; DTC U0100: Lost Communication with ECM / PCM; DTC U0123: Lost Communication with Yaw Rate Sensor Module; DTC U0124: Lost Communication with Lateral Acceleration Sensor Module; DTC U0126: Lost Communication with Steering Angle Sensor Module

*1 to *3:

Even after the trouble areas are repaired, the ABS warning light will not go off unless the following operations are performed:

  • *1:
    1. Drive the vehicle at 20 km/h (12 mph) for 30 seconds or more and check that the ABS warning light goes off.
    2. Clear the DTCs.
  • *2:
    1. Turn the ignition switch to ON.
    2. Keep the vehicle stationary for 5 seconds or more and depress the brake pedal lightly 2 or 3 times.
    3. Drive the vehicle at the vehicle speed of 50 km/h (31 mph) and depress and hold the brake pedal firmly for approximately 3 seconds.
    4. Repeat the above operation 3 times or more and check that the ABS warning light goes off.
    5. Clear the DTCs.
  • *3:
    1. Turn the ignition switch to ON.
    2. Depress the brake pedal.
    3. Clear the DTCs.

HINT: 

In some cases, the Techstream cannot be used when the ABS warning light remains on.

VSC DTC

DTC Code Detection Item See
C1201 Engine Control System Malfunction Refer to DTC C1201: Engine Control System Malfunction
C1203 ECM Communication Circuit Malfunction Refer to DTC C1203: ECM Communication Circuit Malfunction
C1210 Zero Point Calibration of Yaw Rate Sensor Undone Refer to DTC C1210: Zero Point Calibration of Yaw Rate Sensor Undone; DTC C1336: Zero Point Calibration of Acceleration Sensor Undone
C1232 Acceleration Sensor Stuck Malfunction Refer to DTC C1232: Acceleration Sensor Stuck Malfunction; DTC C1243: Acceleration Sensor Stuck Malfunction; DTC C1245: Acceleration Sensor Output Malfunction
C1290 Steering Angle Sensor Zero Point Malfunction Refer to DTC C1290: Steering Angle Sensor Zero Point Malfunction
C1336 Zero Point Calibration of Acceleration Sensor Undone Refer to DTC C1210: Zero Point Calibration of Yaw Rate Sensor Undone; DTC C1336: Zero Point Calibration of Acceleration Sensor Undone
C1432 Steering Angle Sensor Power Source Voltage Malfunction Refer to DTC C1432: Steering Angle Sensor Power Source Voltage Malfunction
C1433 Steering Angle Sensor Internal Circuit Refer to DTC C1433: Steering Angle Sensor Internal Circuit
C1434 Steering Angle Sensor Output Malfunction Refer to DTC C1434: Steering Angle Sensor Output Malfunction
C1435 Yaw Rate Sensor Internal Circuit Refer to DTC C1419: Acceleration Sensor Internal Circuit; DTC C1435: Yaw Rate Sensor Internal Circuit
C1436 Yaw Rate Sensor Malfunction Refer to DTC C1436: Yaw Rate Sensor Malfunction
C1437 Lost Communication with ECM Refer to DTC C1437: Lost Communication with ECM
C1439 Steering Angle Sensor Initialization Incomplete Refer to DTC C1439: Steering Angle Sensor Initialization Incomplete; DTC C1445: Vehicle Driven with Steering Angle Sensor not Initialized
C1440 Unusual Bank Angle Detected Refer to DTC C1440: Unusual Bank Angle Detected
C1443 Invalid Data Received from Yaw Rate Sensor Refer to DTC C1442: Invalid Data Received from Acceleration Sensor; DTC C1443: Invalid Data Received from Yaw Rate Sensor
C1445 Vehicle Driven with Steering Angle Sensor not Initialized Refer to DTC C1439: Steering Angle Sensor Initialization Incomplete; DTC C1445: Vehicle Driven with Steering Angle Sensor not Initialized
U0100 Lost Communication with ECM / PCM Refer to DTC U0073: Control Module Communication Bus OFF; DTC U0100: Lost Communication with ECM / PCM; DTC U0123: Lost Communication with Yaw Rate Sensor Module; DTC U0124: Lost Communication with Lateral Acceleration Sensor Module; DTC U0126: Lost Communication with Steering Angle Sensor Module
U0123 Lost Communication with Yaw Rate Sensor Module Refer to DTC U0073: Control Module Communication Bus OFF; DTC U0100: Lost Communication with ECM / PCM; DTC U0123: Lost Communication with Yaw Rate Sensor Module; DTC U0124: Lost Communication with Lateral Acceleration Sensor Module; DTC U0126: Lost Communication with Steering Angle Sensor Module
U0126 Lost Communication with Steering Angle Sensor Module Refer to DTC U0073: Control Module Communication Bus OFF; DTC U0100: Lost Communication with ECM / PCM; DTC U0123: Lost Communication with Yaw Rate Sensor Module; DTC U0124: Lost Communication with Lateral Acceleration Sensor Module; DTC U0126: Lost Communication with Steering Angle Sensor Module

HINT: 

In some cases, the Techstream cannot be used when the slip indicator light remains on.

ABS TEST MODE DTC

DTC Code Detection Item See
C1271 Low Output Signal of Front Speed Sensor RH (Test Mode DTC) Refer to DTC C1271: Low Output Signal of Front Speed Sensor RH (Test Mode DTC); DTC C1272: Low Output Signal of Front Speed Sensor LH (Test Mode DTC); DTC C1275: Abnormal Change in Output Signal of Front Speed Sensor RH (Test Mode DTC); DTC C1276: Abnormal Change in Output Signal of Front Speed Sensor LH (Test Mode DTC)
C1272 Low Output Signal of Front Speed Sensor LH (Test Mode DTC) Refer to DTC C1271: Low Output Signal of Front Speed Sensor RH (Test Mode DTC); DTC C1272: Low Output Signal of Front Speed Sensor LH (Test Mode DTC); DTC C1275: Abnormal Change in Output Signal of Front Speed Sensor RH (Test Mode DTC); DTC C1276: Abnormal Change in Output Signal of Front Speed Sensor LH (Test Mode DTC)
C1273 Low Output Signal of Rear Speed Sensor RH (Test Mode DTC) Refer to DTC C1273: Low Output Signal of Rear Speed Sensor RH (Test Mode DTC); DTC C1274: Low Output Signal of Rear Speed Sensor LH (Test Mode DTC); DTC C1277: Abnormal Change in Output Signal of Rear Speed Sensor RH (Test Mode DTC); DTC C1278: Abnormal Change in Output Signal of Rear Speed Sensor LH (Test Mode DTC)
C1274 Low Output Signal of Rear Speed Sensor LH (Test Mode DTC) Refer to DTC C1273: Low Output Signal of Rear Speed Sensor RH (Test Mode DTC); DTC C1274: Low Output Signal of Rear Speed Sensor LH (Test Mode DTC); DTC C1277: Abnormal Change in Output Signal of Rear Speed Sensor RH (Test Mode DTC); DTC C1278: Abnormal Change in Output Signal of Rear Speed Sensor LH (Test Mode DTC)
C1275 Abnormal Change in Output Signal of Front Speed Sensor RH (Test Mode DTC) Refer to DTC C1271: Low Output Signal of Front Speed Sensor RH (Test Mode DTC); DTC C1272: Low Output Signal of Front Speed Sensor LH (Test Mode DTC); DTC C1275: Abnormal Change in Output Signal of Front Speed Sensor RH (Test Mode DTC); DTC C1276: Abnormal Change in Output Signal of Front Speed Sensor LH (Test Mode DTC)
C1276 Abnormal Change in Output Signal of Front Speed Sensor LH (Test Mode DTC) Refer to DTC C1271: Low Output Signal of Front Speed Sensor RH (Test Mode DTC); DTC C1272: Low Output Signal of Front Speed Sensor LH (Test Mode DTC); DTC C1275: Abnormal Change in Output Signal of Front Speed Sensor RH (Test Mode DTC); 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) Refer to DTC C1273: Low Output Signal of Rear Speed Sensor RH (Test Mode DTC); DTC C1274: Low Output Signal of Rear Speed Sensor LH (Test Mode DTC); DTC C1277: Abnormal Change in Output Signal of Rear Speed Sensor RH (Test Mode DTC); DTC C1278: Abnormal Change in Output Signal of Rear Speed Sensor LH (Test Mode DTC)
C1278 Abnormal Change in Output Signal of Rear Speed Sensor LH (Test Mode DTC) Refer to DTC C1273: Low Output Signal of Rear Speed Sensor RH (Test Mode DTC); DTC C1274: Low Output Signal of Rear Speed Sensor LH (Test Mode DTC); DTC C1277: Abnormal Change in Output Signal of Rear Speed Sensor RH (Test Mode DTC); DTC C1278: Abnormal Change in Output Signal of Rear Speed Sensor LH (Test Mode DTC)
C1279 Acceleration Sensor Output Voltage Malfunction (Test Mode DTC) Refer to DTC C1279: Acceleration Sensor Output Voltage Malfunction (Test Mode DTC)
C1281 Master Cylinder Pressure Sensor Output Malfunction (Test Mode DTC) Refer to DTC C1281: Master Cylinder Pressure Sensor Output Malfunction (Test Mode DTC)
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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.