Toyota Yaris: Power Steering System / Diagnostic Trouble Code Chart

Toyota Yaris XP210 (2020-2022) Reapir and Service Manual / Steering / Power Assist Systems / Power Steering System / Diagnostic Trouble Code Chart

DIAGNOSTIC TROUBLE CODE CHART

Power Steering System

DTC No.

Detection Item

DTC Detection Condition

Warning Indicate

Return-to-normal Condition

Note

Link

C05D604

Power Steering Control Module Processor System Internal Failure

ECU internal malfunction

(CPU malfunction)

EPS warning light: Comes on

Ignition switch ON again

-

C05D646

Power Steering Control Module Processor Calibration / Parameter Memory Failure

ECU internal malfunction

(EEPROM error)

EPS warning light: Comes on

Ignition switch ON again

-

C05D649

Power Steering Control Module Processor Internal Electronic Failure

ECU internal malfunction

(Peripheral circuit malfunction)

EPS warning light: Comes on

Ignition switch ON again

-

C10001C

Control Module Internal Temperature Sensor "A" Circuit Voltage Out of Range

ECU temperature sensor "A" range malfunction

EPS warning light: Comes on

The ECU judges the system has returned to normal

-

C123A17

Supply Voltage Circuit Circuit Voltage Above Threshold

IG voltage is 18.5 V or more

EPS warning light: Comes on

The ECU judges the system has returned to normal or the ignition switch is turned ON again

-

C151162

Power Steering Torque Sensor "A" Signal Compare Failure

Diagnosis Condition: IG ON

Malfunction Status: The difference between 1A and 1B of the TRQ1 output signal is more than a certain value.

EPS warning light: Comes on

Ignition switch ON again

-

C151187

Power Steering Torque Sensor "A" Missing Message

Diagnosis Condition: IG ON

Malfunction Status: When the battery voltage is 9.0 V or more, the TRQ1 signal is not detected, breaks communication protocol, has a CRC error, or has an invalid rolling counter.

EPS warning light: Comes on

Ignition switch ON again

-

C151262

Power Steering Torque Sensor "B" Signal Compare Failure

Diagnosis Condition: IG ON

Malfunction Status: The difference between 2A and 2B of the TRQ2 output signal is more than a certain value.

EPS warning light: Comes on

Ignition switch ON again

-

C151287

Power Steering Torque Sensor "B" Missing Message

Diagnosis Condition: IG ON

Malfunction Status: When the battery voltage is 9.0 V or more, the TRQ2 signal is not detected, breaks communication protocol, has a CRC error, or has an invalid rolling counter.

EPS warning light: Comes on

Ignition switch ON again

-

C151A17

Power Steering Torque Sensor "A" Supply Voltage Circuit Voltage Above Threshold

TRQV1 voltage is 5.6 V or more

EPS warning light: Comes on

Ignition switch ON again

-

C151B17

Power Steering Torque Sensor "B" Supply Voltage Circuit Voltage Above Threshold

TRQV2 voltage is 5.6 V or more

EPS warning light: Comes on

Ignition switch ON again

-

C152A18

Power Steering Motor "A" Circuit Current Below Threshold

Motor "A" low current malfunction

EPS warning light: Comes on

Ignition switch ON again

-

C152A19

Power Steering Motor "A" Circuit Current Above Threshold

Motor "A" overcurrent

EPS warning light: Comes on

Ignition switch ON again

-

C152B18

Power Steering Motor "B" Circuit Current Below Threshold

Motor "B" low current malfunction

EPS warning light: Comes on

Ignition switch ON again

-

C152B19

Power Steering Motor "B" Circuit Current Above Threshold

Motor "B" overcurrent

EPS warning light: Comes on

Ignition switch ON again

-

C153A00

Malfunction of Power Steering Motor "A" Inverter Pre-Driver

Inverter "A" pre-driver circuit malfunction

EPS warning light: Comes on

Ignition switch ON again

-

C153A19

Power Steering Motor "A" Inverter Circuit Current Above Threshold

Inverter "A" short circuit malfunction

EPS warning light: Comes on

Ignition switch ON again

-

C153B00

Malfunction of Power Steering Motor "B" Inverter Pre-Driver

Inverter "B" pre-driver circuit malfunction

EPS warning light: Comes on

Ignition switch ON again

-

C153B19

Power Steering Motor "B" Inverter Circuit Current Above Threshold

Inverter "B" short circuit malfunction

EPS warning light: Comes on

Ignition switch ON again

-

C154A7E

Power Supply & Contrary Connection Protection Relay "A" Actuator Stuck On

Contrary connection protection relay "A" short circuit malfunction (initial check)

EPS warning light: Comes on

Ignition switch ON again

-

C154A7F

Power Supply & Contrary Connection Protection Relay "A" Actuator Stuck Off

Contrary connection protection relay "A" open circuit malfunction (initial check)

EPS warning light: Comes on

Ignition switch ON again

-

C154B7E

Power Supply & Contrary Connection Protection Relay "B" Actuator Stuck On

Contrary connection protection relay "B" short circuit malfunction (initial check)

EPS warning light: Comes on

Ignition switch ON again

-

C154B7F

Power Supply & Contrary Connection Protection Relay "B" Actuator Stuck Off

Contrary connection protection relay "B" open circuit malfunction (initial check)

EPS warning light: Comes on

Ignition switch ON again

-

C155A16

Power Steering Motor "A" Supply Voltage Circuit Voltage Below Threshold

Motor "1" PIG voltage is 3.6 V or less

EPS warning light: Comes on

Ignition switch ON again

-

C155A17

Power Steering Motor "A" Supply Voltage Circuit Voltage Above Threshold

Diagnosis Condition: IG ON

Malfunction Status: Motor "1" PIG voltage is 19.6 V or more

EPS warning light: Comes on

Ignition switch ON again

-

C155B16

Power Steering Motor "B" Supply Voltage Circuit Voltage Below Threshold

Motor "2" PIG voltage is 3.6 V or less

EPS warning light: Comes on

Ignition switch ON again

-

C155B17

Power Steering Motor "B" Supply Voltage Circuit Voltage Above Threshold

Diagnosis Condition: IG ON

Malfunction Status: Motor "2" PIG voltage is 19.6 V or more

EPS warning light: Comes on

Ignition switch ON again

-

C157A11

Power Steering Motor "A" Current Sensor Circuit Short to Ground

Motor "A" current sensor low voltage malfunction

EPS warning light: Comes on

Ignition switch ON again

-

C157A62

Power Steering Motor "A" Current Sensor Signal Compare Failure

Motor "A" current sensor correlation malfunction

EPS warning light: Comes on

Ignition switch ON again

-

C157B11

Power Steering Motor "B" Current Sensor Circuit Short to Ground

Motor "B" current sensor low voltage malfunction

EPS warning light: Comes on

Ignition switch ON again

-

C157B62

Power Steering Motor "B" Current Sensor Signal Compare Failure

Motor "B" current sensor correlation malfunction

EPS warning light: Comes on

Ignition switch ON again

-

C15D11C

Power Steering Motor Position Sensor "A" Circuit Voltage Out of Range

Rotation angle sensor "A" range malfunction

EPS warning light: Comes on

Ignition switch ON again

-

C15D162

Power Steering Motor Position Sensor "A" Signal Compare Failure

Rotation angle sensor "A" correlation malfunction

EPS warning light: Comes on

Ignition switch ON again

-

C15D21C

Power Steering Motor Position Sensor "B" Circuit Voltage Out of Range

Rotation angle sensor "B" range malfunction

EPS warning light: Comes on

Ignition switch ON again

-

C15D262

Power Steering Motor Position Sensor "B" Signal Compare Failure

Rotation angle sensor "B" correlation malfunction

EPS warning light: Comes on

Ignition switch ON again

-

C15D31C

Power Steering Motor Position Sensor "C" Circuit Voltage Out of Range

Rotation angle sensor "C" range malfunction

EPS warning light: Comes on

Ignition switch ON again

-

C15D362

Power Steering Motor Position Sensor "C" Signal Compare Failure

Rotation angle sensor "C" correlation malfunction

EPS warning light: Comes on

Ignition switch ON again

-

U010087

Lost Communication With ECM/PCM "A" Missing Message

Lost communication with ECM

EPS warning light: Does not come on

After normal confirmation

-

U012687

Lost Communication with Steering Angle Sensor Module Missing Message

Lost communication with steering sensor

EPS warning light: Does not come on

After normal confirmation

-

U012987

Lost Communication with Brake System Control Module Missing Message

Lost communication with skid control ECU (brake booster with master cylinder assembly)

EPS warning light: Does not come on

After normal confirmation

-

U014087

Lost Communication with Body Control Module Missing Message

Lost communication with main body ECU (multiplex network body ECU)

EPS warning light: Does not come on

After normal confirmation

-

U023A87

Lost Communication with Image Processing Module "A" Missing Message

Lost communication with forward recognition camera

EPS warning light: Does not come on

After normal confirmation

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