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Diagnostic Trouble Code Chart

HINT.

If a trouble code is displayed during the DTC check, inspect the circuit listed for that code For details of each code, refer to the relevant article listed under respective "See" in the DTC chart.

Power Steering System 

DIAGNOSTIC TROUBLE CODE CHART - POWER STEERING SYSTEM

DTC Code Detection Item Trouble Area Return-to-normal Condition P/S Warning Light See
C1511  Torque Sensor Circuit Malfunction
  1. Wire harness or connector
  2. Torque sensor (built into power steering gear assembly)
  3. Power steering ECU assembly
 Engine switch on (IG) again ◦ 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 or connector
  2. Torque sensor (built into power steering gear assembly)
  3. Power steering ECU assembly
 Engine switch on (IG) again ◦ 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 or connector
  2. Torque sensor (built into power steering gear assembly)
  3. Power steering ECU assembly
 Engine switch on (IG) again ◦ 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 - After calibrating torque sensor zero point ◦ DTC C1515 TORQUE SENSOR ZERO POINT ADJUSTMENT UNDONE; DTC C1525 ROTATION ANGLE SENSOR INITIALIZATION UNDONE 
C1516  Torque Sensor Zero Point Adjustment Incomplete - After clearing the DTC ◦ DTC C1516 TORQUE SENSOR ZERO POINT ADJUSTMENT INCOMPLETE; DTC C1526 ROTATION ANGLE SENSOR INITIALIZATION INCOMPLETE 
C1521  Motor Circuit Malfunction
  1. Wire harness or connector
  2. Power steering motor (built into power steering gear assembly)
  3. Power steering ECU assembly
 Engine switch on (IG) again ◦ DTC C1521 MOTOR CIRCUIT MALFUNCTION; DTC C1522 MOTOR CIRCUIT MALFUNCTION; DTC C1523 MOTOR CIRCUIT MALFUNCTION; DTC C1524 MOTOR CIRCUIT MALFUNCTION; DTC C1532 ECU MALFUNCTION; DTC C1555 MOTOR RELAY WELDING FAILURE 
C1522  Motor Circuit Malfunction
  1. Wire harness or connector
  2. Power steering motor (built into power steering gear assembly)
  3. Power steering ECU assembly
 Engine switch on (IG) again ◦ DTC C1521 MOTOR CIRCUIT MALFUNCTION; DTC C1522 MOTOR CIRCUIT MALFUNCTION; DTC C1523 MOTOR CIRCUIT MALFUNCTION; DTC C1524 MOTOR CIRCUIT MALFUNCTION; DTC C1532 ECU MALFUNCTION; DTC C1555 MOTOR RELAY WELDING FAILURE 
C1523  Motor Circuit Malfunction
  1. Wire harness or connector
  2. Power steering motor (built into power steering gear assembly)
  3. Power steering ECU assembly
 Engine switch on (IG) again ◦ DTC C1521 MOTOR CIRCUIT MALFUNCTION; DTC C1522 MOTOR CIRCUIT MALFUNCTION; DTC C1523 MOTOR CIRCUIT MALFUNCTION; DTC C1524 MOTOR CIRCUIT MALFUNCTION; DTC C1532 ECU MALFUNCTION; DTC C1555 MOTOR RELAY WELDING FAILURE 
C1524  Motor Circuit Malfunction
  1. Wire harness or connector
  2. Power steering motor (built into power steering gear assembly)
  3. Power steering ECU assembly
 Engine switch on (IG) again ◦ DTC C1521 MOTOR CIRCUIT MALFUNCTION; DTC C1522 MOTOR CIRCUIT MALFUNCTION; DTC C1523 MOTOR CIRCUIT MALFUNCTION; DTC C1524 MOTOR CIRCUIT MALFUNCTION; DTC C1532 ECU MALFUNCTION; DTC C1555 MOTOR RELAY WELDING FAILURE 
C1525  Rotation Angle Sensor Initialization Undone - After calibrating torque sensor zero point ◦ DTC C1515 TORQUE SENSOR ZERO POINT ADJUSTMENT UNDONE; DTC C1525 ROTATION ANGLE SENSOR INITIALIZATION UNDONE 
C1526  Rotation Angle Sensor Initialization Incomplete - After clearing the DTC ◦ DTC C1516 TORQUE SENSOR ZERO POINT ADJUSTMENT 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 or connector
  3. Power steering earth wire
  4. Power steering ECU assembly
 Engine switch on (IG) again ◦ DTC C1528 MOTOR ROTATION ANGLE SENSOR MALFUNCTION 
C1531  ECU Malfunction Power steering ECU assembly Engine switch on (IG) again ◦ DTC C1531 ECU MALFUNCTION; DTC C1533 ECU MALFUNCTION; DTC C1534 ECU MALFUNCTION 
C1532  ECU Malfunction
  1. Wire harness or connector
  2. Power steering motor (built into power steering gear assembly)
  3. Power steering ECU assembly
 Engine switch on (IG) again ◦ DTC C1521 MOTOR CIRCUIT MALFUNCTION; DTC C1522 MOTOR CIRCUIT MALFUNCTION; DTC C1523 MOTOR CIRCUIT MALFUNCTION; DTC C1524 MOTOR CIRCUIT MALFUNCTION; DTC C1532 ECU MALFUNCTION; DTC C1555 MOTOR RELAY WELDING FAILURE 
C1533  ECU Malfunction Power steering ECU assembly Engine switch on (IG) again and after normal confirmation ◦ DTC C1531 ECU MALFUNCTION; DTC C1533 ECU MALFUNCTION; DTC C1534 ECU MALFUNCTION 
C1534  ECU Malfunction Power steering ECU assembly Engine switch on (IG) again ◦ 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
 Engine switch on (IG) again ◦ DTC C1541 VEHICLE SPEED SIGNAL MALFUNCTION 
C1551  IG Power Supply Voltage Malfunction Power steering ECU assembly Engine switch on (IG) again ◦ DTC C1551 IG POWER SUPPLY VOLTAGE MALFUNCTION 
C1552  PIG Power Supply Voltage Malfunction
  1. EPS fuse
  2. Wire harness or connector
  3. Power steering ECU assembly
 Engine switch on (IG) again ◦ DTC C1552 PIG POWER SUPPLY VOLTAGE MALFUNCTION; DTC C1554 POWER SUPPLY RELAY FAILURE 
C1554  Power Supply Relay Failure
  1. EPS fuse
  2. Wire harness or connector
  3. Power steering ECU assembly
 Engine switch on (IG) again ◦ DTC C1552 PIG POWER SUPPLY VOLTAGE MALFUNCTION; DTC C1554 POWER SUPPLY RELAY FAILURE 
C1555  Motor Relay Welding Failure
  1. Wire harness or connector
  2. Power steering motor (built into power steering gear assembly)
  3. Power steering ECU assembly
 Engine switch on (IG) again ◦ DTC C1521 MOTOR CIRCUIT MALFUNCTION; DTC C1522 MOTOR CIRCUIT MALFUNCTION; DTC C1523 MOTOR CIRCUIT MALFUNCTION; DTC C1524 MOTOR CIRCUIT MALFUNCTION; DTC C1532 ECU MALFUNCTION; 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 
U0100  Lost Communication with ECM / PCM "A"
  1. CAN communication system
  2. ECM (when only U0100 is output)
 Normal confirmation of CAN communication system X DTC U0100 LOST COMMUNICATION WITH ECM / PCM "A"; DTC U0129 LOST COMMUNICATION WITH BRAKE SYSTEM CONTROL MODULE 
U0129  Lost Communication with Brake System Control Module
  1. CAN communication system
  2. Skid control ECU (when only U0129 is output)
 Normal confirmation of CAN communication system ◦ DTC U0100 LOST COMMUNICATION WITH ECM / PCM "A"; DTC U0129 LOST COMMUNICATION WITH BRAKE SYSTEM CONTROL MODULE 
HINT
  • ◦. Warning light comes on
  • X Warning light goes off (normal reset)
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