ELECTRONICALLY CONTROLLED BRAKE SYSTEM DIAGNOSTIC TROUBLE CODE CHART
Note
When replacing the skid control ECU, sensor, etc., make sure that the power switch is turned off, the stop light switch is off, and 2 minutes have elapsed since the driver's door was closed.
Tech Tips
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If no abnormality is found when inspecting parts, inspect the skid control ECU and ground points for poor connections.
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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 page for the respective "DTC Code" in the DTC chart.
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When 2 or more DTCs are detected, perform circuit inspections one by one until the problem is identified.
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Inspect the fuses and relays before inspecting the trouble areas as shown in the table below.
| DTC Code | Detection Item | INF Code | Trouble Area | See page |
|---|---|---|---|---|
| 42 | Electronically Controlled Brake System Malfunction | - | Electronically controlled brake system | |
| C0200/31 | Front Speed Sensor RH Circuit | 251 252 253 254 255 262 |
1. Front speed sensor RH 2. Speed sensor circuit 3. Sensor installation 4. Speed sensor rotor 5. Skid control ECU |
|
| C0205/32 | Front Speed Sensor LH Circuit | 264 265 266 267 268 275 |
1. Front speed sensor LH 2. Speed sensor circuit 3. Sensor installation 4. Speed sensor rotor 5. Skid control ECU |
|
| C0210/33 | Rear Speed Sensor RH Circuit | 277 278 279 280 281 288 |
1. Rear speed sensor RH 2. Speed sensor circuit 3. Sensor installation 4. Speed sensor rotor 5. Skid control ECU |
|
| C0215/34 | Rear Speed Sensor LH Circuit | 290 291 292 293 294 301 |
1. Rear speed sensor LH 2. Speed sensor circuit 3. Sensor installation 4. Speed sensor rotor 5. Skid control ECU |
|
| C1235/35 | Foreign Object is Attached on Tip of Front Speed Sensor RH | 302 | 1. Front speed sensor RH 2. Speed sensor circuit 3. Sensor installation 4. Speed sensor rotor 5. Skid control ECU |
|
| C1236/36 | Foreign Object is Attached on Tip of Front Speed Sensor LH | 303 | 1. Front speed sensor LH 2. Speed sensor circuit 3. Sensor installation 4. Speed sensor rotor 5. Skid control ECU |
|
| C1238/38 | Foreign Object is Attached on Tip of Rear Speed Sensor RH | 304 | 1. Rear speed sensor RH 2. Speed sensor circuit 3. Sensor installation 4. Speed sensor rotor 5. Skid control ECU |
|
| C1239/39 | Foreign Object is Attached on Tip of Rear Speed Sensor LH | 305 | 1. Rear speed sensor LH 2. Speed sensor circuit 3. Sensor installation 4. Speed sensor rotor 5. Skid control ECU |
|
| C1240/95 | Yaw Rate Sensor Discrimination | 321 | 1. Yaw rate and acceleration sensor 2. Skid control ECU |
|
| C1243/43 | Acceleration Sensor Stuck Malfunction | 311 312 317 |
1. Yaw rate and acceleration sensor 2. Skid control ECU |
|
| C1244/44 | Open or Short in Acceleration Sensor Circuit | 314 | 1. Zero point calibration undone 2. Yaw rate and acceleration sensor 3. Sensor installation 4. Skid control ECU |
|
| C1245/45 | Acceleration Sensor Output Malfunction | 313 | Yaw rate and acceleration sensor | |
| C1336/98 | Zero Point Calibration of Acceleration Sensor Undone | 318 | 1. Skid control ECU 2. Yaw rate and acceleration sensor 3. Zero point calibration undone |
|
| C1381/97 | Acceleration Sensor Power Supply Voltage Malfunction | 315 | 1. Yaw rate and acceleration sensor 2. Yaw rate and acceleration sensor power source circuit 3. Skid control ECU |
|
| C1442/44 | Invalid Data Received from Acceleration Sensor | 322 | Yaw rate and acceleration sensor | |
| U0124/95 | Lost Communication with Lateral Acceleration Sensor Module | 319 320 |
1. CAN communication system 2. Yaw rate and acceleration sensor 3. Skid control ECU |
| DTC Code | Detection Item | INF Code | Trouble Area | See page |
|---|---|---|---|---|
| 43 | ABS Control System Malfunction | - | ABS control system | |
| 45 | Electronically Controlled Brake System Malfunction | - | Electronically controlled brake system | |
| C1210/36 | Zero Point Calibration of Yaw Rate Sensor Undone | 336 | 1. Skid control ECU 2. Yaw rate and acceleration sensor 3. Zero point calibration undone |
|
| C1231/31 | Steering Angle Sensor Circuit Malfunction | 341 343 |
1. Steering angle sensor 2. Steering angle sensor circuit 3. Steering angle sensor power supply 4. Skid control ECU |
|
| C1234/34 | Yaw Rate Sensor Malfunction | 333 334 335 337 |
Yaw rate and acceleration sensor | |
| C1290/66 | Steering Angle Sensor Zero Point Malfunction | 351 | 1. Yaw rate and acceleration sensor zero point calibration incomplete 2. Poor adjustment of the center position of the steering wheel 3. Poor adjustment of front wheel alignment |
|
| C1310/51 | Malfunction in HV system | - | Hybrid control system | |
| C1380/64 | Stop Light Control Relay Malfunction | 391 392 |
1. Stop light switch 2. Stop light switch circuit 3. Stop light control relay 4. Stop light control relay circuit 5. Skid control ECU |
|
| C1439/66 | Steering Angle Sensor Initialization Incomplete | 352 | 1. Steering angle sensor 2. Yaw rate and acceleration sensor 3. Skid control ECU |
|
| C1440/98 | Unusual Bank Angle Detected | 630 | Yaw rate and acceleration sensor | |
| C1443/34 | Invalid Data Received from Yaw Rate Sensor | 340 | Yaw rate and acceleration sensor | |
| C1445/66 | Vehicle Driven with Steering Angle Sensor not Initialized | 353 | 1. Steering angle sensor 2. Yaw rate and acceleration sensor 3. Skid control ECU |
|
| U0123/62 | Lost Communication with Yaw Rate Sensor Module | 338 339 |
1. CAN communication system 2. Yaw rate and acceleration sensor 3. Skid control ECU |
|
| U0126/63 | Lost Communication with Steering Angle Sensor Module | 350 601 |
1. CAN communication system 2. Steering angle sensor 3. Skid control ECU |
| DTC Code | Detection Item | INF Code | Trouble Area | See page |
|---|---|---|---|---|
| 36 | ABS Control System Malfunction | - | ABS control system | |
| C1202/68 | Master Reservoir Level Malfunction | 511 512 |
1. Brake fluid leak 2. Brake fluid level 3. Brake fluid level warning switch 4. Brake fluid level warning switch circuit 5. Skid control ECU |
|
| C1203/95 | ECM Communication Circuit Malfunction | - | 1. Power management control ECU 2. Main body ECU (Instrument panel junction block) 3. Suspension control ECU 4. Skid control ECU |
|
| C1242/42 | Open in IG1 / IG2 Power Source Circuit | 87 88 |
1. Auxiliary battery 2. IG1 power source circuit 3. IG2 power source circuit 4. Hybrid control system (Charging circuit) 5. Skid control ECU |
|
| C1246/46 | Master Cylinder Pressure Sensor Malfunction | 191 192 194 195 197 198 199 200 201 202 205 |
1. Brake actuator assembly (Master cylinder pressure sensor) 2. Master cylinder pressure sensor circuit 3. Master cylinder pressure sensor power supply 4. Brake actuator assembly 5. Skid control ECU |
|
| C1247/47 | Stroke Sensor Malfunction | 171 172 173 174 175 176 177 179 181 |
1. Brake pedal stroke sensor 2. Brake pedal stroke sensor circuit 3. Brake pedal stroke sensor power supply 4. Sensor installation 5. Skid control ECU |
|
| C1249/49 | Open in Stop Light Switch Circuit | 520 | 1. STOP fuse 2. Stop light switch 3. Stop light switch circuit 4. Skid control ECU |
|
| C1252/52 | Brake Booster Pump Motor on Time Abnormally Long | 130 | 1. ECB* MTR1 relay 2. ECB* MTR1 relay circuit 3. ECB* MTR2 relay 4. ECB* MTR2 relay circuit 5. Brake booster pump (Accumulator) |
|
| C1253/53 | Pump Motor Relay Malfunction | 134 138 140 |
1. Fusible link block (ECB* NO. 1 fuse) 2. Fusible link block (ECB* NO. 2 fuse) 3. ECB* MTR1 relay 4. ECB* MTR2 relay 5. ECB* MTR1 relay circuit 6. ECB* MTR2 relay circuit 7. Brake booster pump (Pump motor) 8. Pump motor circuit |
|
| C1256/57 | Accumulator Low Pressure | 141 143 |
1. Accumulator pressure 2. Brake actuator assembly (Accumulator pressure sensor) 3. Brake booster pump |
|
| C1259/58 | HV System Regenerative Malfunction | - | Hybrid control system | |
| C1300 | Skid Control ECU Malfunction | - | Skid control ECU | |
| C1311/11 | Open in Main Relay 1 Circuit | 1 | 1. ABS main relay 1 circuit 2. Skid control ECU |
|
| C1312/12 | Short in Main Relay 1 Circuit | 3 | 1. ABS main relay 1 circuit 2. Skid control ECU |
|
| C1313/13 | Open in Main Relay 2 Circuit | 4 | 1. ABS main relay 2 circuit 2. Skid control ECU |
|
| C1314/14 | Short in Main Relay 2 Circuit | 6 | 1. ABS main relay 2 circuit 2. Skid control ECU |
|
| C1315/31 | SMC1 Changeover Solenoid Malfunction | 61 62 63 64 |
1. Brake actuator assembly (SMC1) 2. SMC1 circuit 3. Skid control ECU |
|
| C1316/32 | SMC2 Changeover Solenoid Malfunction | 66 67 68 69 |
1. Brake actuator assembly (SMC2) 2. SMC2 circuit 3. Skid control ECU |
|
| C1319/35 | SCSS Changeover Solenoid Malfunction | 71 72 73 74 |
1. Brake stroke simulator cylinder 2. Brake stroke simulator cylinder circuit 3. Skid control ECU |
|
| C1341/62 | Front Hydraulic System RH Malfunction | 551 552 553 554 555 |
1. Fluid leak 2. Disc rotor 3. Brake actuator assembly |
|
| C1342/63 | Front Hydraulic System LH Malfunction | 561 562 563 564 565 |
1. Fluid leak 2. Disc rotor 3. Brake actuator assembly |
|
| C1343/64 | Rear Hydraulic System RH Malfunction | 571 572 573 574 575 |
1. Fluid leak 2. Disc rotor 3. Brake actuator assembly |
|
| C1344/65 | Rear Hydraulic System LH Malfunction | 581 582 583 584 585 |
1. Fluid leak 2. Disc rotor 3. Brake actuator assembly |
|
| C1345/66 | Linear Solenoid Valve Offset Learning Undone | 501 502 503 504 |
Initialization and calibration of the linear solenoid valve undone | |
| C1352/21 | Front Increasing Pressure Solenoid RH Malfunction | 11 12 13 14 |
1. Brake actuator assembly (FRA) 2. FRA circuit 3. Skid control ECU |
|
| C1353/23 | Front Increasing Pressure Solenoid LH Malfunction | 21 22 23 24 |
1. Brake actuator assembly (FLA) 2. FLA circuit 3. Skid control ECU |
|
| C1354/25 | Rear Increasing Pressure Solenoid RH Malfunction | 31 32 33 34 |
1. Brake actuator assembly (RRA) 2. RRA circuit 3. Skid control ECU |
|
| C1355/27 | Rear Increasing Pressure Solenoid LH Malfunction | 41 42 43 44 |
1. Brake actuator assembly (RLA) 2. RLA circuit 3. Skid control ECU |
|
| C1356/22 | Front Decreasing Pressure Solenoid RH Malfunction | 16 17 18 19 |
1. Brake actuator assembly (FRR) 2. FRR circuit 3. Skid control ECU |
|
| C1357/24 | Front Decreasing Pressure Solenoid LH Malfunction | 26 27 28 29 |
1. Brake actuator assembly (FLR) 2. FLR circuit 3. Skid control ECU |
|
| C1358/26 | Rear Decreasing Pressure Solenoid RH Malfunction | 36 37 38 39 |
1. Brake actuator assembly (RRR) 2. RRR circuit 3. Skid control ECU |
|
| C1359/28 | Rear Decreasing Pressure Solenoid LH Malfunction | 46 47 48 49 |
1. Brake actuator assembly (RLR) 2. RLR circuit 3. Skid control ECU |
|
| C1364/61 | Wheel Cylinder Pressure Sensor Malfunction | 221 222 224 225 227 228 230 231 233 234 236 237 239 240 242 243 |
1. Brake actuator assembly (Wheel cylinder pressure sensor) 2. Wheel cylinder pressure sensor circuit 3. Wheel cylinder pressure sensor power supply 4. Brake actuator assembly 5. Skid control ECU |
|
| C1365/54 | Accumulator Pressure Sensor Malfunction | 211 212 214 215 |
1. Brake actuator assembly (Accumulator pressure sensor) 2. Accumulator pressure sensor circuit 3. Accumulator pressure sensor power supply 4. Brake actuator assembly 5. Skid control ECU |
|
| C1368/67 | Linear Solenoid Valve Offset Malfunction | 505 | 1. Initialization and calibration of the linear solenoid valve undone 2. Brake actuator assembly |
|
| C1377/43 | Capacitor Malfunction | 101 102 103 105 106 108 109 110 |
1. CAPACITOR fuse 2. Apply high voltage 3. Brake control power supply 4. Brake control power supply circuit |
|
| C1378/44 | Capacitor Communication Malfunction | 112 | 1. Brake control power supply 2. Brake control power supply circuit |
|
| C1391/69 | Accumulator Leak Malfunction | 591 | 1. Brake fluid leak 2. Brake booster pump 3. Brake actuator assembly |
|
| C1392/48 | Stroke Sensor Zero Point Calibration Undone | - | 1. Brake pedal stroke sensor zero point calibration incomplete (Initialization and calibration of linear solenoid valve incomplete) 2. Skid control ECU |
|
| C1438/59 | Lost Communication with HV ECU | 154 157 |
1. CAN communication system (Skid control ECU to power management control ECU) 2. Skid control ECU |
|
| U0073/94 | Control Module Communication Bus OFF | 400 401 402 406 407 411 412 |
1. CAN communication system (CAN No. 1 bus) 2. CAN communication system (Power management bus) 3. Yaw rate and acceleration sensor 4. Steering angle sensor 5. Skid control ECU |
|
| U0293/59 | Communication Error from HV ECU | 152 153 |
1. CAN communication system 2. Power management control ECU 3. Skid control ECU |
*: Electronically Controlled Brake System
| DTC Code | Detection Item | INF Code | Trouble Area | See page |
|---|---|---|---|---|
| C1241/41 | Low Battery Positive Voltage | 81*1 82*1 83*1 91*2 92*2 93*2 94*2 |
1. Auxiliary battery 2. Brake control power supply 3. Hybrid control system (Charging circuit) |
*1: ABS DTC
*2: Electronically Controlled Brake System DTC
| DTC Code | Detection Item | INF Code | Trouble Area | See page |
|---|---|---|---|---|
| C1348 | Different Diameter Tire Malfunction | - | 1. Tire and wheel size 2. Tire pressure 3. Speed sensor circuit 4. Skid control ECU |
| DTC Code | Detection Item | INF Code | Trouble Area | See page |
|---|---|---|---|---|
| C1271/71 | Low Output Signal of Front Speed Sensor RH (Test Mode DTC) | - | 1. Front speed sensor RH 2. Sensor installation 3. Speed sensor rotor |
|
| C1272/72 | Low Output Signal of Front Speed Sensor LH (Test Mode DTC) | - | 1. Front speed sensor LH 2. Sensor installation 3. Speed sensor rotor |
|
| C1273/73 | Low Output Signal of Rear Speed Sensor RH (Test Mode DTC) | - | 1. Rear speed sensor RH 2. Sensor installation 3. Speed sensor rotor |
|
| C1274/74 | Low Output Signal of Rear Speed Sensor LH (Test Mode DTC) | - | 1. Rear speed sensor LH 2. Sensor installation 3. Speed sensor rotor |
|
| C1275/75 | Abnormal Change in Output Signal of Front Speed Sensor RH (Test Mode DTC) | - | 1. Front speed sensor RH 2. Speed sensor rotor |
|
| C1276/76 | Abnormal Change in Output Signal of Front Speed Sensor LH (Test Mode DTC) | - | 1. Front speed sensor LH 2. Speed sensor rotor |
|
| C1277/77 | Abnormal Change in Output Signal of Rear Speed Sensor RH (Test Mode DTC) | - | 1. Rear speed sensor RH 2. Speed sensor rotor |
|
| C1278/78 | Abnormal Change in Output Signal of Rear Speed Sensor LH (Test Mode DTC) | - | 1. Rear speed sensor LH 2. Speed sensor rotor |
|
| C1279/79 | Acceleration Sensor Output Voltage Malfunction (Test Mode DTC) | - | 1. Sensor installation 2. Yaw rate and acceleration sensor |
|
| C1281/81 | Master Cylinder Pressure Sensor Output Malfunction (Test Mode DTC) | - | 1. Stop light switch 2. Master cylinder pressure sensor |
| DTC Code | Detection Item | INF Code | Trouble Area | See page |
|---|---|---|---|---|
| C0371/71 | Yaw Rate Sensor (Test Mode DTC) | - | 1. Sensor installation 2. Yaw rate and acceleration sensor |
| DTC Code | Detection Item | INF Code | Trouble Area | See page |
|---|---|---|---|---|
| C1346/71 | Stroke Sensor Zero Point Learning Malfunction (Test Mode DTC) | - | 1. Brake pedal stroke sensor 2. Brake pedal stroke sensor circuit |