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Diagnostic Trouble Code Table

ELECTRONIC POWER STEERING SYSTEM DIAGNOSTIC TROUBLE CODE TABLE 

DIAGNOSTIC TROUBLE CODE TABLE

DTC No. Detection Item Trouble Area Reference
C1511 Torque Sensor Circuit Malfunction
  1. Wire harness
  2. Torque senor (built into power steering gear assembly)
  3. Power steering ECU assembly
 DTC C1511 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
 DTC C1512 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
 DTC C1513 Torque Sensor Circuit Malfunction 
C1515 Torque Sensor Zero Point Adjustment Undone - DTC C1515 Torque Sensor Zero Point Adjustment Undone 
C1516 Torque Sensor Zero Point Adjustment Incomplete - DTC C1516 Torque Sensor Zero Point Adjustment Incomplete 
C1521 Motor Circuit Malfunction
  1. Power steering ECU assembly
 DTC C1521 Motor Circuit Malfunction 
C1522 Motor Circuit Malfunction
  1. Power steering ECU assembly
 DTC C1522 Motor Circuit Malfunction 
C1523 Motor Circuit Malfunction
  1. Wire harness
  2. Power steering motor (built into power steering gear assembly)
  3. Power steering ECU assembly
 DTC C1523 Motor Circuit Malfunction 
C1524 Motor Circuit Malfunction
  1. Wire harness
  2. Power steering motor (built into power steering gear assembly)
  3. Power steering ECU assembly
 DTC C1524 Motor Circuit Malfunction 
C1525 Rotation Angle Sensor Initialization Undone - DTC C1525 Rotation Angle Sensor Initialization Undone 
C1526 Rotation Angle Sensor Initialization Incomplete - 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 earth wire
  4. Power steering ECU assembly
 DTC C1528 Motor Rotation Angle Sensor Malfunction 
C1531 ECU Malfunction
  1. Power steering ECU assembly
 DTC C1531 ECU Malfunction 
C1532 ECU Malfunction
  1. Power steering ECU assembly
 DTC C1532 ECU Malfunction 
C1533 ECU Malfunction
  1. Power steering ECU assembly
 DTC C1533 ECU Malfunction 
C1534 ECU Malfunction
  1. Power steering ECU assembly
 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
 DTC C1541 Vehicle Speed Signal Malfunction 
C1551 IG Power Supply Voltage Malfunction
  1. Power steering ECU assembly
 DTC C1551 IG Power Supply Voltage Malfunction 
C1552 PIG Power Supply Voltage Malfunction
  1. EPS fuse
  2. Wire harness
  3. Power steering ECU assembly
 DTC C1552 PIG Power Supply Voltage Malfunction 
C1554 Power Supply Relay Failure
  1. EPS fuse
  2. Wire harness
  3. Power steering ECU assembly
 DTC C1554 Power Supply Relay Failure 
C1555 Motor Relay Welding Failure
  1. Power steering ECU assembly
 DTC C1555 Motor Relay Welding Failure 
C1581 Assist Map Number Un-Writing
  1. ECM
  2. Gateway ECU
  3. Power steering ECU assembly
 DTC C1581 Assist Map Number Un-Writing 
U0105 Lost Communication with ECM
  1. CAN communication system
 DTC U0105 Lost Communication with ECM 
U0121 Lost Communication with Antilock Brake System (ABS) Control Module
  1. CAN communication system
 DTC U0121 Lost Communication with Anti-lock Brake System (ABS) Control Module 
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