ELECTRONICALLY CONTROLLED BRAKE SYSTEM DIAGNOSTIC TROUBLE CODE CHART

Note

When replacing the skid control ECU (brake booster with master cylinder assembly), sensor, etc., make sure that the power switch is turned off, the stop light switch assembly is off, and 2 minutes have elapsed since the driver door was closed.

Tech Tips

If no abnormality is found when inspecting parts, inspect the skid control ECU and ground points for poor connections.
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.
When 2 or more DTCs are detected, perform circuit inspections one by one until the problem is identified.
Inspect the fuses and relays before inspecting the trouble areas as shown in the table below.

ABS DTC
DTC Code	Detection Item	INF Code	See page
42	Electronically Controlled Brake System Malfunction	-	Click here
C1235/35	Foreign Object is Attached on Tip of Front Speed Sensor RH	541	Click here
C1236/36	Foreign Object is Attached on Tip of Front Speed Sensor LH	542	Click here
C1238/38	Foreign Object is Attached on Tip of Rear Speed Sensor RH	543	Click here
C1239/39	Foreign Object is Attached on Tip of Rear Speed Sensor LH	544	Click here
C1243/43	Acceleration Sensor Stuck Malfunction	561 562 563 564 565	Click here
C1244/44	Open or Short in Acceleration Sensor Circuit	571	Click here
C1245/45	Acceleration Sensor Output Malfunction	581	Click here
C1336/98	Zero Point Calibration of Acceleration Sensor Undone	-	Click here
C1381/97	Acceleration Sensor Power Supply Voltage Malfunction	601	Click here
C1442/44	Invalid Data Received from Acceleration Sensor	572	Click here
C1464/31	Front Speed Sensor RH Circuit	501 502 503 504 506 507 508	Click here
C1465/32	Front Speed Sensor LH Circuit	511 512 513 514 516 517 518	Click here
C1466/33	Rear Speed Sensor RH Circuit	521 522 523 524 526 527 528	Click here
C1467/34	Rear Speed Sensor LH Circuit	531 532 533 534 536 537 538	Click here
U0124/95	Lost Communication with Lateral Acceleration Sensor Module	591 592	Click here

VSC DTC
DTC Code	Detection Item	INF Code	See page
43	ABS Control System Malfunction	-	Click here
45	Electronically Controlled Brake System Malfunction	-	Click here
C1210/36	Zero Point Calibration of Yaw Rate Sensor Undone	-	Click here
C1231/31	Steering Angle Sensor Circuit Malfunction	701 702 703	Click here
C1234/34	Yaw Rate Sensor Malfunction	711 712 713 714	Click here
C1290/66	Steering Angle Sensor Zero Point Malfunction	751	Click here
C1310/51	Malfunction in HV system	-	Click here
C1380/64	Stop Light Control Relay Malfunction	761 762	Click here
C1439/66	Steering Angle Sensor Initialization Incomplete	752	Click here
C1440/98	Unusual Bank Angle Detected	-	Click here
C1443/34	Invalid Data Received from Yaw Rate Sensor	715	Click here
C1445/66	Vehicle Driven with Steering Angle Sensor not Initialized	753	Click here
U0123/62	Lost Communication with Yaw Rate Sensor Module	731 732	Click here
U0126/63	Lost Communication with Steering Angle Sensor Module	741 742	Click here

Electronically Controlled Brake System DTC
DTC Code	Detection Item	INF Code	See page
36	ABS Control System Malfunction	-	Click here
C1202/68	Master Reservoir Level Malfunction	371	Click here
C1203/95	ECM Communication Circuit Malfunction	-	Click here
C1211/25	SLA Linear Solenoid	21 22 23 24	Click here
C1212/26	SLR Linear Solenoid	31 32 33 34	Click here
C1214/62	Hydraulic Control System Malfunction	431 432 433 434 435 436 437 438	Click here
C1225/31	SA1 Solenoid Circuit	41 42 43 44	Click here
C1226/32	SA2 Solenoid Circuit	51 52 53 54	Click here
C1227/33	SA3 Solenoid Circuit	61 62 63 64	Click here
C1228/34	STR Solenoid Circuit	71 72 73 74	Click here
C1242/42	Open in IG1 / IG2 Power Source Circuit	111 112	Click here
C1246/46	Master Cylinder Pressure Sensor Malfunction	201 202 203 204 207	Click here
C1247/47	Stroke Sensor Malfunction	211 212 213 214 215 218 219 223	Click here
C1249/49	Open in Stop Light Switch Circuit	231	Click here
C1252/52	Brake Booster Pump Motor on Time Abnormally Long	311	Click here
C1253/53	Pump Motor Relay Malfunction	321 322 323 324 325 326 327 328 329	Click here
C1256/56	Accumulator Low Pressure	341	Click here
C1257/57	Power Supply Drive Circuit	361 362	Click here
C1259/58	HV System Regenerative Malfunction	-	Click here
C1300	Skid Control ECU Malfunction	-	Click here
C1311/11	Open in Main Relay 1 Circuit	1	Click here
C1312/12	Short in Main Relay 1 Circuit	2	Click here
C1345/66	Linear Solenoid Valve Offset Learning Undone	-	Click here
C1352/21	FR Solenoid	11 12	Click here
C1353/23	RR Solenoid	15 16	Click here
C1356/22	FL Solenoid	13 14	Click here
C1357/24	RL Solenoid	17 18	Click here
C1364/61	Wheel Cylinder Pressure Sensor Malfunction	421 422 423 424 426	Click here
C1365/54	Accumulator Pressure Sensor Malfunction	331 332 333 334	Click here
C1368/67	Linear Solenoid Valve Offset Malfunction	-	Click here
C1391/69	Accumulator Leak Malfunction	351	Click here
C1392/48	Stroke Sensor Zero Point Calibration Undone	-	Click here
C1451/72	Motor Drive Permission Malfunction	-	Click here
U0073/94	Control Module Communication Bus OFF	461 462 463 464 465 466	Click here
U0293/59	Communication Error from HV ECU	411 412 413	Click here

ABS and Electronically Controlled Brake System DTC
DTC Code	Detection Item	INF Code	See page
C1241/41	Low Battery Positive Voltage	1011 1021 5512 5522 553*2	Click here

*1: Electronically Controlled Brake System DTC

*2: ABS DTC

ABS Test Mode DTC
DTC Code	Detection Item	INF Code	See page
C1271/71	Low Output Signal of Front Speed Sensor RH (Test Mode DTC)	-	Click here
C1272/72	Low Output Signal of Front Speed Sensor LH (Test Mode DTC)	-	Click here
C1273/73	Low Output Signal of Rear Speed Sensor RH (Test Mode DTC)	-	Click here
C1274/74	Low Output Signal of Rear Speed Sensor LH (Test Mode DTC)	-	Click here
C1275/75	Abnormal Change in Output Signal of Front Speed Sensor RH (Test Mode DTC)	-	Click here
C1276/76	Abnormal Change in Output Signal of Front Speed Sensor LH (Test Mode DTC)	-	Click here
C1277/77	Abnormal Change in Output Signal of Rear Speed Sensor RH (Test Mode DTC)	-	Click here
C1278/78	Abnormal Change in Output Signal of Rear Speed Sensor LH (Test Mode DTC)	-	Click here
C1279/79	Acceleration Sensor Output Voltage Malfunction (Test Mode DTC)	-	Click here
C1281/81	Master Cylinder Pressure Sensor Output Malfunction (Test Mode DTC)	-	Click here

Electronically Controlled Brake System Test Mode DTC
DTC Code	Detection Item	INF Code	See page
C1346/71	Stroke Sensor Zero Point Learning Malfunction (Test Mode DTC)	-	Click here