Diagnostic Trouble Code Chart

HINT:

If any DTCs are displayed during the DTC check, inspect the circuit listed for these DTCs. For details of each DTC, refer to the "Refer to" indicated in the DTC chart.

Electric Power Steering System

DIAGNOSTIC TROUBLE CODE CHART

DTC Code	Detection Item	Trouble Area	Normal Function Return Condition	P/S Warning Light
C1511/11	Torque Sensor 1 Malfunction	Steering column assembly (Torque sensor) Power steering ECU	Ignition switch ON again	◦
C1512/11	Torque Sensor 2 Malfunction	Steering column assembly (Torque sensor) Power steering ECU	Ignition switch ON again	◦
C1513/11	Torque Sensor Deviation Excessive	Steering column assembly (Torque sensor) Power steering ECU	Ignition switch ON again	◦
C1514/11	Torque Sensor Power Supply Voltage Malfunction	Steering column assembly (Torque sensor) Power steering ECU	Ignition switch ON again	◦
C1521/25	Short in Motor Circuit	Power steering ECU	Ignition switch ON again	◦
C1524/24	Motor Terminal Voltage Malfunction	Steering column assembly Power steering ECU	Ignition switch ON again	◦
C1528/12	Motor Rotation Angle Sensor Malfunction	Steering column assembly (Torque sensor) Power steering ECU	Ignition switch ON again	◦
C1531/25	ECU Malfunction	Power steering ECU	Ignition switch ON again	◦
C1532/25	ECU Malfunction	Power steering ECU	Ignition switch ON again	◦
C1533/25	Temperature Sensor Circuit is Low or High	Power steering ECU	Ignition switch ON again or after normal confirmation	◦
C1534/25	EEPROM Malfunction	Power steering ECU	Ignition switch ON again	◦
C1551/25	IG Power Supply Voltage Malfunction	ECU-IG1 fuse IG power source circuit Power steering ECU	Ignition switch ON again or after normal confirmation	◦
C1552/22	PIG Power Supply Voltage Malfunction	PIG power source circuit Power steering ECU	Ignition switch ON again or after normal confirmation	◦
C1554/23	Power Supply Relay Failure	PIG power source circuit Power steering ECU	Ignition switch ON again	◦
C1555/25	Motor Relay Welding Failure	Steering column assembly Power steering ECU	Ignition switch ON again	◦
C1581/26	Assist Map Number Un-Writing	Power steering ECU	Assist map write or ignition switch ON again	◦
U0073/49	Control Module Communication Bus Off	CAN communication system	Ignition switch ON again	◦
U0100/41	Lost Communication with ECM/PCM "A"	CAN communication system ECM	Ignition switch ON again or after normal confirmation	X
U0129/42	Lost Communication with Brake System Control Module	CAN communication system Skid control ECU	Ignition switch ON again or after normal confirmation	◦
HINT: ◦: Warning light comes on X: Warning light turns off (normal reset)