POWER STEERING SYSTEM DIAGNOSTIC TROUBLE CODE CHART

Table 1. Power Steering System
DTC No.	Detection Item	DTC Detection Condition	Warning Indicate	Return-to-normal Condition	Note	Link
C1511	Torque Sensor1	Torque sensor malfunction	EPS warning light: Comes on	Ignition switch ON again	-	Click here
C1512	Torque Sensor2	Torque sensor malfunction	EPS warning light: Comes on	Ignition switch ON again	-	Click here
C1513	Torque Sensor Deviation Excessive	Torque sensor malfunction	EPS warning light: Comes on	Ignition switch ON again	-	Click here
C1514	Torque Sensor Power Supply Voltage	Torque sensor malfunction	EPS warning light: Comes on	Ignition switch ON again	-	Click here
C1515	Torque Sensor Zero Point Adjustment Undone	This DTC is stored when torque sensor zero point calibration has not been performed.	EPS warning light: Comes on	Zero point calibration occurs	There is no malfunction if this DTC is not output again after performing zero point calibration.	Click here
C1516	Torque Sensor Zero Point Adjustment Incomplete	Torque sensor zero point calibration is incomplete due to the steering wheel being touched during calibration.	EPS warning light: Comes on	Clear DTC	There is no malfunction if this DTC is not output again after clearing the DTC and torque sensor calibration value, and performing zero point calibration.	Click here
C1517	Torque Hold	Torque sensor malfunction	EPS warning light: Comes on	Ignition switch ON again	-	Click here
C1524	Motor Terminal Voltage	Short (or open) in motor circuit or abnormal voltage in motor circuit	EPS warning light: Comes on	Ignition switch ON again	-	Click here
C1531	ECU Malfunction	ECU internal malfunction (CPU malfunction)	EPS warning light: Comes on	Ignition switch ON again	-	Click here
C1532	ECU Malfunction	ECU internal malfunction (Peripheral circuit malfunction)	EPS warning light: Comes on	Ignition switch ON again	-	Click here
C1533	Temperature Sensor Circuit is Low or High	ECU internal malfunction (Substrate temperature sensor malfunction)	EPS warning light: Comes on	Ignition switch ON again	-	Click here
C1534	EEPROM	ECU internal malfunction (EEPROM error)	EPS warning light: Comes on	Ignition switch ON again	-	Click here
C1535	ECU Malfunction	ECU internal malfunction (Steering wheel location data error)	EPS warning light: Comes on	Ignition switch ON again	-	Click here
C1551	IG Power Supply Voltage	Open or short in IG power source circuit with ignition switch ON	EPS warning light: Comes on	After normal confirmation	-	Click here
C1552	PIG Power Supply Voltage	PIG power source circuit malfunction	EPS warning light: Comes on	After normal confirmation	-	Click here
C1553	PIG Power Supply Overvoltage	PIG power source overvoltage IG power source overvoltage	EPS warning light: Comes on	After normal confirmation	-	Click here
C1554	Power Supply Relay Failure	Power source relay circuit malfunction	EPS warning light: Comes on	Ignition switch ON again	-	Click here
C1555	Motor Relay Welding Failure	Predriver (Motor relay circuit) malfunction	EPS warning light: Comes on	Ignition switch ON again	-	Click here
C1581	Assist Map Number Un-Writing	Assist map not written in power steering ECU assembly	EPS warning light: Comes on	Assist map written	-	Click here
U0100	Lost Communication with ECM / PCM "A"	Lost communication with ECM	EPS warning light: 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.	After normal confirmation	-	Click here
U0129	Lost Communication with Brake System Control Module	Lost communication with skid control ECU (Brake actuator assembly)	EPS warning light: Comes on	After normal confirmation	-	Click here