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.
2021 Lexus RX 450h BaseFACTORY OEM SERVICE PROCEDURE
Electronically Controlled Brake System
ELECTRONICALLY CONTROLLED BRAKE SYSTEM DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION [10/2015 - 08/2016]
| DTC Code | Description |
|---|---|
| 36 | ABS Control System Malfunction |
| 42 | Electronically Controlled Brake System Malfunction |
| 43 | ABS Control System Malfunction |
| 45 | Electronically Controlled Brake System Malfunction |
| C1202-68 | Master Reservoir Level Malfunction |
| C1203-95 | ECM Communication Circuit Malfunction |
| C1210-36 | Zero Point Calibration of Yaw Rate Sensor Undone |
| C1231-31 | Steering Angle Sensor Circuit Malfunction |
| C1234-34 | Yaw Rate Sensor Malfunction |
| C1235-35 | Foreign Object is Attached on Tip of Front Speed Sensor RH |
| C1236-36 | Foreign Object is Attached on Tip of Front Speed Sensor LH |
| C1238-38 | Foreign Object is Attached on Tip of Rear Speed Sensor RH |
| C1239-39 | Foreign Object is Attached on Tip of Rear Speed Sensor LH |
| C1240-95 | Yaw Rate Sensor Discrimination |
| C1241-41 | Low Battery Positive Voltage |
| C1242-42 | Open in IG1 / IG2 Power Source Circuit |
| C1243-43 | Acceleration Sensor Stuck Malfunction |
| C1244-44 | Open or Short in Acceleration Sensor Circuit |
| C1245-45 | Acceleration Sensor Output Malfunction |
| C1246-46 | Master Cylinder Pressure Sensor Malfunction |
| C1247-47 | Stroke Sensor Malfunction |
| C1249-49 | Open in Stop Light Switch Circuit |
| C1252-52 | Brake Booster Pump Motor on Time Abnormally Long |
| C1253-53 | Pump Motor Relay Malfunction |
| C1256-57 | Accumulator Low Pressure |
| C1259-58 | HV System Regenerative Malfunction |
| C1290-66 | Steering Angle Sensor Zero Point Malfunction |
| C1300 | Skid Control ECU Malfunction |
| C1310-14 | Malfunction in HV System |
| C1310-51 | Malfunction in HV system |
| C1311-11 | Open in Main Relay 1 Circuit |
| C1312-12 | Short in Main Relay 1 Circuit |
| C1313-13 | Open in Main Relay 2 Circuit |
| C1314-14 | Short in Main Relay 2 Circuit |
| C1315-31 | SMC1 Changeover Solenoid Malfunction |
| C1316-32 | SMC2 Changeover Solenoid Malfunction |
| C1319-35 | SCSS Changeover Solenoid Malfunction |
| C1336-98 | Zero Point Calibration of Acceleration Sensor Undone |
| C1341-62 | Front Hydraulic System RH Malfunction |
| C1342-63 | Front Hydraulic System LH Malfunction |
| C1343-64 | Rear Hydraulic System RH Malfunction |
| C1344-65 | Rear Hydraulic System LH Malfunction |
| C1345-66 | Linear Solenoid Valve Offset Learning Undone |
| C1348 | Different Diameter Tire Malfunction |
| C1352-21 | Front Increasing Pressure Solenoid RH Malfunction |
| C1353-23 | Front Increasing Pressure Solenoid LH Malfunction |
| C1354-25 | Rear Increasing Pressure Solenoid RH Malfunction |
| C1355-27 | Rear Increasing Pressure Solenoid LH Malfunction |
| C1356-22 | Front Decreasing Pressure Solenoid RH Malfunction |
| C1357-24 | Front Decreasing Pressure Solenoid LH Malfunction |
| C1358-26 | Rear Decreasing Pressure Solenoid RH Malfunction |
| C1359-28 | Rear Decreasing Pressure Solenoid LH Malfunction |
| C1364-61 | Wheel Cylinder Pressure Sensor Malfunction |
| C1365-54 | Accumulator Pressure Sensor Malfunction |
| C1368-67 | Linear Solenoid Valve Offset Malfunction |
| C1377-43 | Capacitor Malfunction |
| C1378-44 | Capacitor Communication Malfunction |
| C1380-64 | Stop Light Control Relay Malfunction |
| C1381-97 | Acceleration Sensor Power Supply Voltage Malfunction |
| C1391-69 | Accumulator Leak Malfunction |
| C1392-48 | Stroke Sensor Zero Point Calibration Undone |
| C13AF-11 | Electric Parking Brake System Malfunction |
| C1439-66 | Steering Angle Sensor Initialization Incomplete |
| C1440-98 | Unusual Bank Angle Detected |
| C1442-44 | Invalid Data Received from Acceleration Sensor |
| C1443-34 | Invalid Data Received from Yaw Rate Sensor |
| C1445-66 | Vehicle Driven with Steering Angle Sensor not Initialized |
| C1464-31 | Front Speed Sensor RH Circuit |
| C1465-32 | Front Speed Sensor LH Circuit |
| C1466-33 | Rear Speed Sensor RH Circuit |
| C1467-34 | Rear Speed Sensor LH Circuit |
| U0073-94 | Control Module Communication Bus OFF |
| U0120-96 | Lost Communication with Starter / Generator Control Module |
| U0123-62 | Lost Communication with Yaw Rate Sensor Module |
| U0124-95 | Lost Communication with Lateral Acceleration Sensor Module |
| U0126-63 | Lost Communication with Steering Angle Sensor Module |
| U0128-13 | Lost Communication with Park Brake Control Module |
| U0293-59 | Communication Error from HV ECU |
ELECTRONICALLY CONTROLLED BRAKE SYSTEM DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION [08/2016 - 03/2018]
| DTC Code | Description |
|---|---|
| 36 | ABS Control System Malfunction |
| 42 | Electronically Controlled Brake System Malfunction |
| 43 | ABS Control System Malfunction |
| 45 | Electronically Controlled Brake System Malfunction |
| C1202-68 | Master Reservoir Level Malfunction |
| C1203-95 | ECM Communication Circuit Malfunction |
| C1210-36 | Zero Point Calibration of Yaw Rate Sensor Undone |
| C1231-31 | Steering Angle Sensor Circuit Malfunction |
| C1234-34 | Yaw Rate Sensor Malfunction |
| C1235-35 | Foreign Object is Attached on Tip of Front Speed Sensor RH |
| C1236-36 | Foreign Object is Attached on Tip of Front Speed Sensor LH |
| C1238-38 | Foreign Object is Attached on Tip of Rear Speed Sensor RH |
| C1239-39 | Foreign Object is Attached on Tip of Rear Speed Sensor LH |
| C1240-95 | Yaw Rate Sensor Discrimination |
| C1241-41 | Low Battery Positive Voltage |
| C1242-42 | Open in IG1 / IG2 Power Source Circuit |
| C1243-43 | Acceleration Sensor Stuck Malfunction |
| C1244-44 | Open or Short in Acceleration Sensor Circuit |
| C1245-45 | Acceleration Sensor Output Malfunction |
| C1246-46 | Master Cylinder Pressure Sensor Malfunction |
| C1247-47 | Stroke Sensor Malfunction |
| C1249-49 | Open in Stop Light Switch Circuit |
| C1252-52 | Brake Booster Pump Motor on Time Abnormally Long |
| C1253-53 | Pump Motor Relay Malfunction |
| C1256-57 | Accumulator Low Pressure |
| C1259-58 | HV System Regenerative Malfunction |
| C1290-66 | Steering Angle Sensor Zero Point Malfunction |
| C1300 | Skid Control ECU Malfunction |
| C1310-14 | Malfunction in HV System |
| C1310-51 | Malfunction in HV system |
| C1311-11 | Open in Main Relay 1 Circuit |
| C1312-12 | Short in Main Relay 1 Circuit |
| C1313-13 | Open in Main Relay 2 Circuit |
| C1314-14 | Short in Main Relay 2 Circuit |
| C1315-31 | SMC1 Changeover Solenoid Malfunction |
| C1316-32 | SMC2 Changeover Solenoid Malfunction |
| C1319-35 | SCSS Changeover Solenoid Malfunction |
| C1336-98 | Zero Point Calibration of Acceleration Sensor Undone |
| C1341-62 | Front Hydraulic System RH Malfunction |
| C1342-63 | Front Hydraulic System LH Malfunction |
| C1343-64 | Rear Hydraulic System RH Malfunction |
| C1344-65 | Rear Hydraulic System LH Malfunction |
| C1345-66 | Linear Solenoid Valve Offset Learning Undone |
| C1348 | Different Diameter Tire Malfunction |
| C1352-21 | Front Increasing Pressure Solenoid RH Malfunction |
| C1353-23 | Front Increasing Pressure Solenoid LH Malfunction |
| C1354-25 | Rear Increasing Pressure Solenoid RH Malfunction |
| C1355-27 | Rear Increasing Pressure Solenoid LH Malfunction |
| C1356-22 | Front Decreasing Pressure Solenoid RH Malfunction |
| C1357-24 | Front Decreasing Pressure Solenoid LH Malfunction |
| C1358-26 | Rear Decreasing Pressure Solenoid RH Malfunction |
| C1359-28 | Rear Decreasing Pressure Solenoid LH Malfunction |
| C1364-61 | Wheel Cylinder Pressure Sensor Malfunction |
| C1365-54 | Accumulator Pressure Sensor Malfunction |
| C1368-67 | Linear Solenoid Valve Offset Malfunction |
| C1377-43 | Capacitor Malfunction |
| C1378-44 | Capacitor Communication Malfunction |
| C1380-64 | Stop Light Control Relay Malfunction |
| C1381-97 | Acceleration Sensor Power Supply Voltage Malfunction |
| C1391-69 | Accumulator Leak Malfunction |
| C1392-48 | Stroke Sensor Zero Point Calibration Undone |
| C13AF-11 | Electric Parking Brake System Malfunction |
| C1439-66 | Steering Angle Sensor Initialization Incomplete |
| C1440-98 | Unusual Bank Angle Detected |
| C1442-44 | Invalid Data Received from Acceleration Sensor |
| C1443-34 | Invalid Data Received from Yaw Rate Sensor |
| C1445-66 | Vehicle Driven with Steering Angle Sensor not Initialized |
| C1464-31 | Front Speed Sensor RH Circuit |
| C1465-32 | Front Speed Sensor LH Circuit |
| C1466-33 | Rear Speed Sensor RH Circuit |
| C1467-34 | Rear Speed Sensor LH Circuit |
| U0073-94 | Control Module Communication Bus OFF |
| U0120-96 | Lost Communication with Starter / Generator Control Module |
| U0123-62 | Lost Communication with Yaw Rate Sensor Module |
| U0124-95 | Lost Communication with Lateral Acceleration Sensor Module |
| U0126-63 | Lost Communication with Steering Angle Sensor Module |
| U0128-13 | Lost Communication with Park Brake Control Module |
| U0293-59 | Communication Error from HV ECU |
ELECTRONICALLY CONTROLLED BRAKE SYSTEM DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION [03/2018 - 08/2018]
| DTC Code | Description |
|---|---|
| 36 | ABS Control System Malfunction |
| 42 | Electronically Controlled Brake System Malfunction |
| 43 | ABS Control System Malfunction |
| 45 | Electronically Controlled Brake System Malfunction |
| C1202-68 | Master Reservoir Level Malfunction |
| C1203-95 | ECM Communication Circuit Malfunction |
| C1210-36 | Zero Point Calibration of Yaw Rate Sensor Undone |
| C1231-31 | Steering Angle Sensor Circuit Malfunction |
| C1234-34 | Yaw Rate Sensor Malfunction |
| C1235-35 | Foreign Object is Attached on Tip of Front Speed Sensor RH |
| C1236-36 | Foreign Object is Attached on Tip of Front Speed Sensor LH |
| C1238-38 | Foreign Object is Attached on Tip of Rear Speed Sensor RH |
| C1239-39 | Foreign Object is Attached on Tip of Rear Speed Sensor LH |
| C1240-95 | Yaw Rate Sensor Discrimination |
| C1241-41 | Low Battery Positive Voltage |
| C1242-42 | Open in IG1 / IG2 Power Source Circuit |
| C1243-43 | Acceleration Sensor Stuck Malfunction |
| C1244-44 | Open or Short in Acceleration Sensor Circuit |
| C1245-45 | Acceleration Sensor Output Malfunction |
| C1246-46 | Master Cylinder Pressure Sensor Malfunction |
| C1247-47 | Stroke Sensor Malfunction |
| C1249-49 | Open in Stop Light Switch Circuit |
| C1252-52 | Brake Booster Pump Motor on Time Abnormally Long |
| C1253-53 | Pump Motor Relay Malfunction |
| C1256-57 | Accumulator Low Pressure |
| C1259-58 | HV System Regenerative Malfunction |
| C1290-66 | Steering Angle Sensor Zero Point Malfunction |
| C1300 | Skid Control ECU Malfunction |
| C1310-14 | Malfunction in HV System |
| C1310-51 | Malfunction in HV system |
| C1311-11 | Open in Main Relay 1 Circuit |
| C1312-12 | Short in Main Relay 1 Circuit |
| C1313-13 | Open in Main Relay 2 Circuit |
| C1314-14 | Short in Main Relay 2 Circuit |
| C1315-31 | SMC1 Changeover Solenoid Malfunction |
| C1316-32 | SMC2 Changeover Solenoid Malfunction |
| C1319-35 | SCSS Changeover Solenoid Malfunction |
| C1336-98 | Zero Point Calibration of Acceleration Sensor Undone |
| C1341-62 | Front Hydraulic System RH Malfunction |
| C1342-63 | Front Hydraulic System LH Malfunction |
| C1343-64 | Rear Hydraulic System RH Malfunction |
| C1344-65 | Rear Hydraulic System LH Malfunction |
| C1345-66 | Linear Solenoid Valve Offset Learning Undone |
| C1348 | Different Diameter Tire Malfunction |
| C1352-21 | Front Increasing Pressure Solenoid RH Malfunction |
| C1353-23 | Front Increasing Pressure Solenoid LH Malfunction |
| C1354-25 | Rear Increasing Pressure Solenoid RH Malfunction |
| C1355-27 | Rear Increasing Pressure Solenoid LH Malfunction |
| C1356-22 | Front Decreasing Pressure Solenoid RH Malfunction |
| C1357-24 | Front Decreasing Pressure Solenoid LH Malfunction |
| C1358-26 | Rear Decreasing Pressure Solenoid RH Malfunction |
| C1359-28 | Rear Decreasing Pressure Solenoid LH Malfunction |
| C1364-61 | Wheel Cylinder Pressure Sensor Malfunction |
| C1365-54 | Accumulator Pressure Sensor Malfunction |
| C1368-67 | Linear Solenoid Valve Offset Malfunction |
| C1377-43 | Capacitor Malfunction |
| C1378-44 | Capacitor Communication Malfunction |
| C1380-64 | Stop Light Control Relay Malfunction |
| C1381-97 | Acceleration Sensor Power Supply Voltage Malfunction |
| C1391-69 | Accumulator Leak Malfunction |
| C1392-48 | Stroke Sensor Zero Point Calibration Undone |
| C13AF-11 | Electric Parking Brake System Malfunction |
| C1439-66 | Steering Angle Sensor Initialization Incomplete |
| C1440-98 | Unusual Bank Angle Detected |
| C1442-44 | Invalid Data Received from Acceleration Sensor |
| C1443-34 | Invalid Data Received from Yaw Rate Sensor |
| C1445-66 | Vehicle Driven with Steering Angle Sensor not Initialized |
| C1464-31 | Front Speed Sensor RH Circuit |
| C1465-32 | Front Speed Sensor LH Circuit |
| C1466-33 | Rear Speed Sensor RH Circuit |
| C1467-34 | Rear Speed Sensor LH Circuit |
| U0073-94 | Control Module Communication Bus OFF |
| U0120-96 | Lost Communication with Starter / Generator Control Module |
| U0123-62 | Lost Communication with Yaw Rate Sensor Module |
| U0124-95 | Lost Communication with Lateral Acceleration Sensor Module |
| U0126-63 | Lost Communication with Steering Angle Sensor Module |
| U0128-13 | Lost Communication with Park Brake Control Module |
| U0293-59 | Communication Error from HV ECU |
ELECTRONICALLY CONTROLLED BRAKE SYSTEM DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION [08/2018 - 08/2019]
| DTC Code | Description |
|---|---|
| 36 | ABS Control System Malfunction |
| 42 | Electronically Controlled Brake System Malfunction |
| 43 | ABS Control System Malfunction |
| 45 | Electronically Controlled Brake System Malfunction |
| C1202-68 | Master Reservoir Level Malfunction |
| C1203-95 | ECM Communication Circuit Malfunction |
| C1210-36 | Zero Point Calibration of Yaw Rate Sensor Undone |
| C1231-31 | Steering Angle Sensor Circuit Malfunction |
| C1234-34 | Yaw Rate Sensor Malfunction |
| C1235-35 | Foreign Object is Attached on Tip of Front Speed Sensor RH |
| C1236-36 | Foreign Object is Attached on Tip of Front Speed Sensor LH |
| C1238-38 | Foreign Object is Attached on Tip of Rear Speed Sensor RH |
| C1239-39 | Foreign Object is Attached on Tip of Rear Speed Sensor LH |
| C1240-95 | Yaw Rate Sensor Discrimination |
| C1241-41 | Low Battery Positive Voltage |
| C1242-42 | Open in IG1 / IG2 Power Source Circuit |
| C1243-43 | Acceleration Sensor Stuck Malfunction |
| C1244-44 | Open or Short in Acceleration Sensor Circuit |
| C1245-45 | Acceleration Sensor Output Malfunction |
| C1246-46 | Master Cylinder Pressure Sensor Malfunction |
| C1247-47 | Stroke Sensor Malfunction |
| C1249-49 | Open in Stop Light Switch Circuit |
| C1252-52 | Brake Booster Pump Motor on Time Abnormally Long |
| C1253-53 | Pump Motor Relay Malfunction |
| C1256-57 | Accumulator Low Pressure |
| C1259-58 | HV System Regenerative Malfunction |
| C1290-66 | Steering Angle Sensor Zero Point Malfunction |
| C1300 | Skid Control ECU Malfunction |
| C1310-14 | Malfunction in HV System |
| C1310-51 | Malfunction in HV system |
| C1311-11 | Open in Main Relay 1 Circuit |
| C1312-12 | Short in Main Relay 1 Circuit |
| C1313-13 | Open in Main Relay 2 Circuit |
| C1314-14 | Short in Main Relay 2 Circuit |
| C1315-31 | SMC1 Changeover Solenoid Malfunction |
| C1316-32 | SMC2 Changeover Solenoid Malfunction |
| C1319-35 | SCSS Changeover Solenoid Malfunction |
| C1336-98 | Zero Point Calibration of Acceleration Sensor Undone |
| C1341-62 | Front Hydraulic System RH Malfunction |
| C1342-63 | Front Hydraulic System LH Malfunction |
| C1343-64 | Rear Hydraulic System RH Malfunction |
| C1344-65 | Rear Hydraulic System LH Malfunction |
| C1345-66 | Linear Solenoid Valve Offset Learning Undone |
| C1348 | Different Diameter Tire Malfunction |
| C1352-21 | Front Increasing Pressure Solenoid RH Malfunction |
| C1353-23 | Front Increasing Pressure Solenoid LH Malfunction |
| C1354-25 | Rear Increasing Pressure Solenoid RH Malfunction |
| C1355-27 | Rear Increasing Pressure Solenoid LH Malfunction |
| C1356-22 | Front Decreasing Pressure Solenoid RH Malfunction |
| C1357-24 | Front Decreasing Pressure Solenoid LH Malfunction |
| C1358-26 | Rear Decreasing Pressure Solenoid RH Malfunction |
| C1359-28 | Rear Decreasing Pressure Solenoid LH Malfunction |
| C1364-61 | Wheel Cylinder Pressure Sensor Malfunction |
| C1365-54 | Accumulator Pressure Sensor Malfunction |
| C1368-67 | Linear Solenoid Valve Offset Malfunction |
| C1377-43 | Capacitor Malfunction |
| C1378-44 | Capacitor Communication Malfunction |
| C1380-64 | Stop Light Control Relay Malfunction |
| C1381-97 | Acceleration Sensor Power Supply Voltage Malfunction |
| C1391-69 | Accumulator Leak Malfunction |
| C1392-48 | Stroke Sensor Zero Point Calibration Undone |
| C13AF-11 | Electric Parking Brake System Malfunction |
| C1439-66 | Steering Angle Sensor Initialization Incomplete |
| C1440-98 | Unusual Bank Angle Detected |
| C1442-44 | Invalid Data Received from Acceleration Sensor |
| C1443-34 | Invalid Data Received from Yaw Rate Sensor |
| C1445-66 | Vehicle Driven with Steering Angle Sensor not Initialized |
| C1464-31 | Front Speed Sensor RH Circuit |
| C1465-32 | Front Speed Sensor LH Circuit |
| C1466-33 | Rear Speed Sensor RH Circuit |
| C1467-34 | Rear Speed Sensor LH Circuit |
| P0573 | Brake Switch "A" Circuit High |
| U0073-94 | Control Module Communication Bus OFF |
| U0100 | Lost Communication With ECM/PCM "A" |
| U0120-96 | Lost Communication with Starter / Generator Control Module |
| U0123-62 | Lost Communication with Yaw Rate Sensor Module |
| U0124-95 | Lost Communication with Lateral Acceleration Sensor Module |
| U0126-63 | Lost Communication with Steering Angle Sensor Module |
| U0128-13 | Lost Communication with Park Brake Control Module |
| U0140 | Lost Communication with Body Control Module |
| U0293-59 | Communication Error from HV ECU |
ELECTRONICALLY CONTROLLED BRAKE SYSTEM DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION [08/2019 - 07/2020]
| DTC Code | Description |
|---|---|
| C1202 | Master Reservoir Level Malfunction |
| C1203 | ECM Communication Circuit |
| C1210 | Zero Point Calibration of Yaw Rate Sensor undone |
| C1231 | Steering Angle Sensor Circuit |
| C1234 | Yaw Rate Sensor |
| C1235 | Foreign Object is Attached on Tip of Front Speed Sensor RH |
| C1236 | Foreign Object is Attached on Tip of Front Speed Sensor LH |
| C1238 | Foreign Object is Attached on Tip of Rear Speed Sensor RH |
| C1239 | Foreign Object is Attached on Tip of Rear Speed Sensor LH |
| C1240 | Yaw Rate Sensor discrimination |
| C1241 | Low or High Power Supply Voltage |
| C1242 | Open Circuit in IG1/IG2 Power Source Circuit |
| C1243 | Deceleration Sensor Stuck |
| C1244 | Open or Short Circuit in Deceleration Sensor Circuit |
| C1245 | Abnormal Output in Deceleration Sensor |
| C1246 | Master Cylinder Pressure Sensor |
| C1247 | Stroke Sensor |
| C1249 | Open Circuit in Stop Light Switch Circuit |
| C1252 | Brake Booster Pump Motor on Time Abnormally Long |
| C1253 | Pump Motor Relay |
| C1256 | Accumulator Low Pressure |
| C1259 | HV Control System Regenerative Malfunction |
| C1290 | Abnormal Zero Point of Steering Angle Sensor |
| C1300 | Skid Control ECU Malfunction |
| C1310 | HV System Malfunction |
| C1311 | Open Circuit in Main Relay 1 |
| C1312 | Short Circuit in Main Relay 1 |
| C1313 | Open Circuit in Main Relay 2 |
| C1314 | Short Circuit in Main Relay 2 |
| C1315 | SMC1 Changeover Solenoid |
| C1316 | SMC2 Changeover Solenoid |
| C1319 | SCSS Changeover Solenoid |
| C1336 | Zero Point Calibration of Deceleration Sensor undone |
| C1341 | Hydraulic System Malfunction (FR) |
| C1342 | Hydraulic System Malfunction (FL) |
| C1343 | Hydraulic System Malfunction (RR) |
| C1344 | Hydraulic System Malfunction (RL) |
| C1345 | Linear Solenoid Valve Offset Learning undone |
| C1348 | Different Diameter Tire Malfunction |
| C1352 | Increasing Pressure Solenoid (FR) |
| C1353 | Increasing Pressure Solenoid (FL) |
| C1354 | Increasing Pressure Solenoid (RR) |
| C1355 | Increasing Pressure Solenoid (RL) |
| C1356 | Decreasing Pressure Solenoid (FR) |
| C1357 | Decreasing Pressure Solenoid (FL) |
| C1358 | Decreasing Pressure Solenoid (RR) |
| C1359 | Decreasing Pressure Solenoid (RL) |
| C1364 | Wheel Cylinder Pressure Sensor |
| C1365 | Accumulator Pressure Sensor |
| C1368 | Linear Solenoid Valve Offset |
| C1377 | Capacitor |
| C1378 | Capacitor Communication Malfunction |
| C1380 | Stop Light Relay Malfunction |
| C1381 | Abnormal Power Supply Voltage in Yaw Rate and/or Deceleration Sensor |
| C1391 | Abnormal Leak in Accumulator |
| C1392 | Zero Point Calibration of Stroke Sensor undone |
| C13AF | EPB System Malfunction |
| C1439 | Steering Angle Sensor Initialization Incomplete |
| C1440 | Steering Angle Sensor Unusual Bank Angle Detected |
| C1442 | Invalid Data Received from Deceleration Sensor |
| C1443 | Invalid Data Received from Yaw Rate Sensor |
| C1445 | Vehicle Driven with Steering Angle Sensor not Initialized |
| C1464 | Front Speed Sensor RH Circuit |
| C1465 | Front Speed Sensor LH Circuit |
| C1466 | Rear Speed Sensor RH Circuit |
| C1467 | Rear Speed Sensor LH Circuit |
| C147D | Air Bag Circuit |
| P0573 | Brake Switch "A" Circuit High |
| U0073 | Control Module Communication Bus Off |
| U0100 | Lost Communication With ECM/PCM "A" |
| U0120 | Lost Communication With Starter / Generator Control Module |
| U0123 | Lost Communication With Yaw Rate Sensor Module |
| U0124 | Lost Communication With Lateral Acceleration Sensor Module |
| U0126 | Lost Communication With Steering Angle Sensor Module |
| U0128 | Lost Communication With EPB Module |
| U0140 | Lost Communication with Body Control Module |
| U0151 | Lost Communication With Restraints Control Module |
| U0293 | Lost Communication With Hybrid Vehicle Control System |
ELECTRONICALLY CONTROLLED BRAKE SYSTEM DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION [07/2020 - ]
| DTC Code | Description |
|---|---|
| C1202 | Master Reservoir Level Malfunction |
| C1203 | ECM Communication Circuit |
| C1210 | Zero Point Calibration of Yaw Rate Sensor undone |
| C1231 | Steering Angle Sensor Circuit |
| C1234 | Yaw Rate Sensor |
| C1235 | Foreign Object is Attached on Tip of Front Speed Sensor RH |
| C1236 | Foreign Object is Attached on Tip of Front Speed Sensor LH |
| C1238 | Foreign Object is Attached on Tip of Rear Speed Sensor RH |
| C1239 | Foreign Object is Attached on Tip of Rear Speed Sensor LH |
| C1240 | Yaw Rate Sensor discrimination |
| C1241 | Low or High Power Supply Voltage |
| C1242 | Open Circuit in IG1/IG2 Power Source Circuit |
| C1243 | Deceleration Sensor Stuck |
| C1244 | Open or Short Circuit in Deceleration Sensor Circuit |
| C1245 | Abnormal Output in Deceleration Sensor |
| C1246 | Master Cylinder Pressure Sensor |
| C1247 | Stroke Sensor |
| C1249 | Open Circuit in Stop Light Switch Circuit |
| C1252 | Brake Booster Pump Motor on Time Abnormally Long |
| C1253 | Pump Motor Relay |
| C1256 | Accumulator Low Pressure |
| C1259 | HV Control System Regenerative Malfunction |
| C1290 | Abnormal Zero Point of Steering Angle Sensor |
| C1300 | Skid Control ECU Malfunction |
| C1310 | HV System Malfunction |
| C1311 | Open Circuit in Main Relay 1 |
| C1312 | Short Circuit in Main Relay 1 |
| C1313 | Open Circuit in Main Relay 2 |
| C1314 | Short Circuit in Main Relay 2 |
| C1315 | SMC1 Changeover Solenoid |
| C1316 | SMC2 Changeover Solenoid |
| C1319 | SCSS Changeover Solenoid |
| C1336 | Zero Point Calibration of Deceleration Sensor undone |
| C1341 | Hydraulic System Malfunction (FR) |
| C1342 | Hydraulic System Malfunction (FL) |
| C1343 | Hydraulic System Malfunction (RR) |
| C1344 | Hydraulic System Malfunction (RL) |
| C1345 | Linear Solenoid Valve Offset Learning undone |
| C1348 | Different Diameter Tire Malfunction |
| C1352 | Increasing Pressure Solenoid (FR) |
| C1353 | Increasing Pressure Solenoid (FL) |
| C1354 | Increasing Pressure Solenoid (RR) |
| C1355 | Increasing Pressure Solenoid (RL) |
| C1356 | Decreasing Pressure Solenoid (FR) |
| C1357 | Decreasing Pressure Solenoid (FL) |
| C1358 | Decreasing Pressure Solenoid (RR) |
| C1359 | Decreasing Pressure Solenoid (RL) |
| C1364 | Wheel Cylinder Pressure Sensor |
| C1365 | Accumulator Pressure Sensor |
| C1368 | Linear Solenoid Valve Offset |
| C1377 | Capacitor |
| C1378 | Capacitor Communication Malfunction |
| C1380 | Stop Light Relay Malfunction |
| C1381 | Abnormal Power Supply Voltage in Yaw Rate and/or Deceleration Sensor |
| C1391 | Abnormal Leak in Accumulator |
| C1392 | Zero Point Calibration of Stroke Sensor undone |
| C13AF | EPB System Malfunction |
| C1439 | Steering Angle Sensor Initialization Incomplete |
| C1440 | Steering Angle Sensor Unusual Bank Angle Detected |
| C1442 | Invalid Data Received from Deceleration Sensor |
| C1443 | Invalid Data Received from Yaw Rate Sensor |
| C1445 | Vehicle Driven with Steering Angle Sensor not Initialized |
| C1464 | Front Speed Sensor RH Circuit |
| C1465 | Front Speed Sensor LH Circuit |
| C1466 | Rear Speed Sensor RH Circuit |
| C1467 | Rear Speed Sensor LH Circuit |
| C147D | Air Bag Circuit |
| P0573 | Brake Switch "A" Circuit High |
| U0073 | Control Module Communication Bus Off |
| U0100 | Lost Communication With ECM/PCM "A" |
| U0120 | Lost Communication With Starter / Generator Control Module |
| U0123 | Lost Communication With Yaw Rate Sensor Module |
| U0124 | Lost Communication With Lateral Acceleration Sensor Module |
| U0126 | Lost Communication With Steering Angle Sensor Module |
| U0128 | Lost Communication With EPB Module |
| U0140 | Lost Communication with Body Control Module |
| U0151 | Lost Communication With Restraints Control Module |
| U0293 | Lost Communication With Hybrid Vehicle Control System |
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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