POWER STEERING SYSTEM DIAGNOSTIC TROUBLE CODE CHART

Tech Tips

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 page listed under respective "See page" in the DTC chart.

Power Steering System
DTC Code Detection Item Trouble Area Return-to normal Condition P/S Warning Light See page
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 ○

Click here

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 ○

Click here

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 ○

Click here

C1515 Torque Sensor Zero Point Adjustment Undone - After calibrating torque sensor zero point ○

Click here

C1516 Torque Sensor Zero Point Adjustment Incomplete - After clearing the DTC ○

Click here

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 ○

Click here

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 ○

Click here

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 ○

Click here

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 ○

Click here

C1525 Rotation Angle Sensor Initialization Undone - After calibrating torque sensor zero point ○

Click here

C1526 Rotation Angle Sensor Initialization Incomplete - After clearing the DTC ○

Click here

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 ECU assembly

 Engine switch on (IG) again ○

Click here

C1531 ECU Malfunction Power steering ECU assembly Engine switch on (IG) again ○

Click here

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 ○

Click here

C1533 ECU Malfunction Power steering ECU assembly Engine switch on (IG) again and after normal confirmation ○

Click here

C1534 ECU Malfunction Power steering ECU assembly Engine switch on (IG) again ○

Click here

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 ○

Click here

C1551 IG Power Supply Voltage Malfunction Power steering ECU assembly Engine switch on (IG) again ○

Click here

C1552 PIG Power Supply Voltage Malfunction

1. EPS fuse

2. Wire harness or connector

3. Power steering ECU assembly

 Engine switch on (IG) again ○

Click here

C1554 Power Supply Relay Failure

1. EPS fuse

2. Wire harness or connector

3. Power steering ECU assembly

 Engine switch on (IG) again ○

Click here

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 ○

Click here

C1581 Assist Map Number Un-Writing

1. ECM

2. Gateway ECU

3. Power steering ECU assembly

 - ○

Click here

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

Click here

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 ○

Click here

Tech Tips


  • ○: Warning light comes on

  • X: Warning light goes off (normal reset)