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Diagnostic Trouble Code Chart

ELECTRONIC POWER STEERING SYSTEM DIAGNOSTIC TROUBLE CODE CHART

DTC Code Detection Item Trouble Area Refer to
C1511 Torque Sensor Circuit Malfunction 1. Wire harness
2. Torque senor (built into power steering gear assembly)
3. Power steering ECU assembly		 Refer to DTC C1511: Torque Sensor Circuit Malfunction; DTC C1512: Torque Sensor Circuit Malfunction; DTC C1513: Torque Sensor Circuit Malfunction
C1512 Torque Sensor Circuit Malfunction 1. Wire harness
2. Torque senor (built into power steering gear assembly)
3. Power steering ECU assembly		 Refer to DTC C1511: Torque Sensor Circuit Malfunction; DTC C1512: Torque Sensor Circuit Malfunction; DTC C1513: Torque Sensor Circuit Malfunction
C1513 Torque Sensor Circuit Malfunction 1. Wire harness
2. Torque senor (built into power steering gear assembly)
3. Power steering ECU assembly		 Refer to DTC C1511: Torque Sensor Circuit Malfunction; DTC C1512: Torque Sensor Circuit Malfunction; DTC C1513: Torque Sensor Circuit Malfunction
C1515 Torque Sensor Zero Point Adjustment Undone - Refer to DTC C1515: Torque Sensor Zero Point Adjustment Undone; DTC C1516: Torque Sensor Zero Point Adjustment Incomplete; DTC C1525: Rotation Angle Sensor Initialization Undone; DTC C1526: Rotation Angle Sensor Initialization Incomplete
C1516 Torque Sensor Zero Point Adjustment Incomplete - Refer to DTC C1515: Torque Sensor Zero Point Adjustment Undone; DTC C1516: Torque Sensor Zero Point Adjustment Incomplete; DTC C1525: Rotation Angle Sensor Initialization Undone; DTC C1526: Rotation Angle Sensor Initialization Incomplete
C1521 Motor Circuit Malfunction 1. Wire harness
2. Power steering motor (built into power steering gear assembly)
3. Power steering ECU assembly		 Refer to DTC C1521: Motor Circuit Malfunction; DTC C1522: Motor Circuit Malfunction; DTC C1523: Motor Circuit Malfunction; DTC C1524: Motor Circuit Malfunction; DTC C1532: ECU Malfunction
C1522 Motor Circuit Malfunction 1. Wire harness
2. Power steering motor (built into power steering gear assembly)
3. Power steering ECU assembly		 Refer to DTC C1521: Motor Circuit Malfunction; DTC C1522: Motor Circuit Malfunction; DTC C1523: Motor Circuit Malfunction; DTC C1524: Motor Circuit Malfunction; DTC C1532: ECU Malfunction
C1523 Motor Circuit Malfunction 1. Wire harness
2. Power steering motor (built into power steering gear assembly)
3. Power steering ECU assembly		 Refer to DTC C1521: Motor Circuit Malfunction; DTC C1522: Motor Circuit Malfunction; DTC C1523: Motor Circuit Malfunction; DTC C1524: Motor Circuit Malfunction; DTC C1532: ECU Malfunction
C1524 Motor Circuit Malfunction 1. Wire harness
2. Power steering motor (built into power steering gear assembly)
3. Power steering ECU assembly		 Refer to DTC C1521: Motor Circuit Malfunction; DTC C1522: Motor Circuit Malfunction; DTC C1523: Motor Circuit Malfunction; DTC C1524: Motor Circuit Malfunction; DTC C1532: ECU Malfunction
C1525 Rotation Angle Sensor Initialization Undone - Refer to DTC C1515: Torque Sensor Zero Point Adjustment Undone; DTC C1516: Torque Sensor Zero Point Adjustment Incomplete; DTC C1525: Rotation Angle Sensor Initialization Undone; DTC C1526: Rotation Angle Sensor Initialization Incomplete
C1526 Rotation Angle Sensor Initialization Incomplete - Refer to DTC C1515: Torque Sensor Zero Point Adjustment Undone; DTC C1516: Torque Sensor Zero Point Adjustment Incomplete; DTC C1525: Rotation Angle Sensor Initialization Undone; DTC C1526: Rotation Angle Sensor Initialization Incomplete
C1528 Motor Rotation Angle Sensor Malfunction 1. Motor rotation angle sensor (built into power steering gear assembly)
2. Wire harness
3. Power steering ECU assembly		 Refer to DTC C1528: Motor Rotation Angle Sensor Malfunction
C1531 ECU Malfunction 1. Power steering ECU assembly Refer to DTC C1531: ECU Malfunction; DTC C1533: ECU Malfunction; DTC C1534: ECU Malfunction
C1532 ECU Malfunction 1. Wire harness
2. Power steering motor (built into power steering gear assembly)
3. Power steering ECU assembly		 Refer to DTC C1521: Motor Circuit Malfunction; DTC C1522: Motor Circuit Malfunction; DTC C1523: Motor Circuit Malfunction; DTC C1524: Motor Circuit Malfunction; DTC C1532: ECU Malfunction
C1533 ECU Malfunction 1. Power steering ECU assembly Refer to DTC C1531: ECU Malfunction; DTC C1533: ECU Malfunction; DTC C1534: ECU Malfunction
C1534 ECU Malfunction 1. Power steering ECU assembly Refer to DTC C1531: ECU Malfunction; DTC C1533: ECU Malfunction; DTC C1534: ECU Malfunction
C1541 Vehicle Speed Signal Malfunction 1. Speed sensor circuit
2. Skid control ECU
3. CAN communication system
4. Power steering ECU assembly		 Refer to DTC C1541: Vehicle Speed Signal Malfunction
C1551 IG Power Supply Voltage Malfunction 1. Power steering ECU assembly
2. Wire harness		 Refer to DTC C1551: IG Power Supply Voltage Malfunction
C1552 PIG Power Supply Voltage Malfunction 1. EPS fuse
2. Wire harness
3. Power steering ECU assembly		 Refer to DTC C1552: PIG Power Supply Voltage Malfunction; DTC C1554: Power Supply Relay Failure
C1554 Power Supply Relay Failure 1. EPS fuse
2. Wire harness
3. Power steering ECU assembly		 Refer to DTC C1552: PIG Power Supply Voltage Malfunction; DTC C1554: Power Supply Relay Failure
C1555 Motor Relay Welding Failure 1. Wire harness
2. Power steering motor (built into power steering gear assembly)
3. Power steering ECU assembly		 Refer to DTC C1555: Motor Relay Welding Failure
C1581 Assist Map Number Un-Writing 1. ECM
2. Gateway ECU
3. Power steering ECU assembly		 Refer to DTC C1581: Assist Map Number Un-Writing
U0105 Lost Communication with ECM 1. CAN communication system Refer to DTC U0105: Lost Communication with ECM; DTC U0121: Lost Communication with Anti-lock Brake System (ABS) Control Module
U0121 Lost Communication with Anti-lock Brake System (ABS) Control Module 1. CAN communication system Refer to DTC U0105: Lost Communication with ECM; DTC U0121: Lost Communication with Anti-lock Brake System (ABS) Control Module
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