POWER STEERING SYSTEM DIAGNOSTIC TROUBLE CODE CHART

Tech Tips

If a trouble code is displayed during the DTC check, inspect the trouble areas listed for that code. For details of the code, refer to the "See page" below.

Power Steering System
DTC Code	Detection Item	Trouble Area	Return-to-normal Condition	P/S Warning Light	See page
C1511	Torque Sensor Circuit Malfunction	1. Steering column assembly (torque sensor) 2. Power steering ECU	Engine switch on (IG) again	*1	Click here
C1512	Torque Sensor Circuit Malfunction	1. Steering column assembly (torque sensor) 2. Power steering ECU	Engine switch on (IG) again	*1	Click here
C1513	Torque Sensor Circuit Malfunction	1. Steering column assembly (torque sensor) 2. Power steering ECU	Engine switch on (IG) again	*1	Click here
C1514	Torque Sensor Power Supply Abnormal	1. Steering column assembly (torque sensor) 2. Power steering ECU	Engine switch on (IG) again	*1	Click here
C1515	Torque Sensor Zero Point Adjustment Undone	There is no malfunction if this DTC is not output again after performing torque sensor zero point calibration.	Zero point calibration occurs	*1	Click here
C1516	Torque Sensor Zero Point Adjustment Incomplete	There is no malfunction if this DTC is not output again after clearing the DTCs and torque sensor calibration value, and performing zero point calibration.	Clear DTC	*1	Click here
C1517	Torque Hold Abnormal	1. Steering column assembly (torque sensor) 2. Power steering ECU	Engine switch on (IG) again	*1	Click here
C1521	Motor Circuit Malfunction	Power steering ECU	Engine switch on (IG) again	*1	Click here
C1522	Motor Circuit Malfunction	1. Steering column assembly (Power steering motor) 2. Power steering ECU	Engine switch on (IG) again	*1	Click here
C1523	Motor Circuit Malfunction	1. Steering column assembly (Power steering motor) 2. Power steering ECU	Engine switch on (IG) again	*1	Click here
C1524	Motor Circuit Malfunction	1. Steering column assembly (Power steering motor) 2. Power steering ECU	Engine switch on (IG) again	*1	Click here
C1525	Rotation Angle Sensor Initialization Undone	There is no malfunction if this DTC is not output again after performing rotation angle sensor value initialization.	Rotation angle sensor calibration occurs	*1	Click here
C1526	Rotation Angle Sensor Initialization Incomplete	There is no malfunction if this DTC is not output again after clearing the DTCs and torque sensor calibration value, and performing rotation angle sensor value initialization.	Clear DTC	*1	Click here
C1528	Motor Rotation Angle Sensor Malfunction	1. Motor rotation angle sensor (built into steering column assembly) 2. Power steering ECU	Engine switch on (IG) again	*1	Click here
C1531	ECU Malfunction	Power steering ECU	Engine switch on (IG) again	*1	Click here
C1532	ECU Malfunction	Power steering ECU	Engine switch on (IG) again	*1	Click here
C1533	ECU Malfunction	Power steering ECU	After normal judgment	*2	Click here
C1534	ECU Malfunction	Power steering ECU	Engine switch on (IG) again	*2	Click here
C1541	Vehicle Speed Signal Malfunction	1. Speed sensor circuit 2. Brake actuator assembly (Skid control ECU) 3. CAN communication system 4. Power steering ECU	Engine switch on (IG) again	*1	Click here
C1551	IG Power Supply Voltage Malfunction	1. ECU-IG1 No. 1 fuse 2. IG power source circuit 3. Power steering ECU	Engine switch on (IG) again or after normal confirmation	*1	Click here
C1552	PIG Power Supply Voltage Malfunction	1. EPS fuse 2. PIG power source circuit 3. Power steering ECU	Engine switch on (IG) again or after normal confirmation	*1	Click here
C1554	Power Supply Relay Failure	Power steering ECU	Engine switch on (IG) again	*1	Click here
C1555	Motor Relay Welding Failure	1. Steering column assembly (Power steering motor) 2. Power steering ECU	Engine switch on (IG) again	*1	Click here
C1581	Assist Map Number Un-Writing	1. Power steering ECU 2. CAN communication system 3. ECM	Assist map written	*1	Click here
C1582	Assist Map Number Mismatch	1. Power steering ECU 2. CAN communication system 3. ECM	Engine switch on (IG) again	*1	Click here
U0100	Lost Communication with ECM / PCM "A"	1. CAN communication system 2. ECM	After normal condition	*3	Click here
U0129	Lost Communication with Brake System Control Module	1. CAN communication system 2. Brake actuator assembly (Skid control ECU)	After normal condition	*1	Click here
U1104	Lost Communication with Driving Support ECU	1. CAN communication system 2. Driving support ECU	After normal condition	*2	Click here

*1: Warning light comes on
*2: Warning light turns off (normal reset)
*3: When an error occurs during steering assist, the warning light does not illuminate. For errors that occur before assist (at the time of the decision to start assist), the warning light illuminates.