POWER STEERING SYSTEM DIAGNOSTIC TROUBLE CODE CHART

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 is turned to ON again -

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C1512 Torque Sensor2 Torque sensor malfunction EPS warning light: Comes on Ignition switch is turned to ON again -

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C1513 Torque Sensor Deviation Excessive Torque sensor malfunction EPS warning light: Comes on Ignition switch is turned to ON again -

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C1514 Torque Sensor Power Supply Voltage Torque sensor malfunction EPS warning light: Comes on Ignition switch is turned to ON again -

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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 is performed or the ignition switch is turned to ON again There is no malfunction if this DTC is not output again after performing zero point calibration.

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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 The DTC is cleared 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.

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C1521 Short in Motor Circuit Motor overcurrent EPS warning light: Comes on Ignition switch is turned to ON again -

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C1522 Power Supply Sensor Motor current sensor malfunction EPS warning light: Comes on Ignition switch is turned to ON again -

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C1523 Current Deviation Excessive Excessively large current deviation EPS warning light: Comes on Ignition switch is turned to ON again -

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C1528 Motor Rotation Angle Sensor Motor rotation angle sensor malfunction EPS warning light: Comes on Ignition switch is turned to ON again -

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C1531 ECU Malfunction ECU internal malfunction (CPU malfunction) EPS warning light: Comes on Ignition switch is turned to ON again -

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C1532 ECU Malfunction ECU internal malfunction (Peripheral circuit malfunction) EPS warning light: Comes on Ignition switch is turned to ON again -

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C1533 Temperature Sensor Circuit is Low or High ECU internal malfunction (Substrate temperature sensor malfunction) EPS warning light: Comes on The ECU judges the system has returned to normal -

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C1534 EEPROM ECU internal malfunction (EEPROM error) EPS warning light: Comes on Ignition switch is turned to ON again -

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C1541 Vehicle Speed Signal A vehicle speed signal malfunction is detected EPS warning light: Comes on The ECU judges the system has returned to normal -

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C1551 IG Power Supply Voltage When the PIG power supply voltage is normal, the IG power supply voltage is 18.5 V or higher EPS warning light: Comes on The ECU judges the system has returned to normal -

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C1552 PIG Power Supply Voltage PIG power source circuit malfunction EPS warning light: Comes on Ignition switch is turned to ON again -

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C1554 Power Supply Relay Failure Power source relay circuit malfunction EPS warning light: Comes on Ignition switch is turned to ON again -

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C1555 Motor Relay Welding Failure Motor relay circuit malfunction EPS warning light: Comes on Ignition switch is turned to ON again -

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C1567 Error in Matching of ECUs
  • An incompatible ECM is detected

  • An incompatible main body ECU (multiplex network body ECU) is detected

  • An incompatible skid control ECU (brake actuator assembly) is detected

EPS warning light: Comes on Ignition switch is turned to ON again -

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C1581 Assist Map Number Un-Writing Assist map not written in power steering ECU (rack and pinion power steering gear assembly) EPS warning light: Comes on Assist Map Writing is performed -

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C1582 Assist Map Number Mismatch Assist map number mismatch EPS warning light: Does not come on Ignition switch is turned to ON again -

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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. The ECU judges the system has returned to normal -

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U0126 Lost Communication With Steering Angle Sensor Module Lost communication with steering angle sensor EPS warning light: Comes on The ECU judges the system has returned to normal -

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U0129 Lost Communication with Brake System Control Module Lost communication with skid control ECU (Brake actuator assembly) EPS warning light: Comes on The ECU judges the system has returned to normal -

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U023A Lost Communication with Front Camera Module Lost communication with forward recognition camera EPS warning light: Does not come on The ECU judges the system has returned to normal w/ Forward Recognition Camera

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