POWER ASSIST SYSTEMS POWER STEERING SYSTEM DIAGNOSTIC TROUBLE CODE CHART
| 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 ON again | - | 
|
| C1512 | Torque Sensor2 | Torque sensor malfunction | EPS warning light: Comes on | Ignition switch ON again | - |
|
| C1513 | Torque Sensor Deviation Excessive | Torque sensor malfunction | EPS warning light: Comes on | Ignition switch ON again | - |
|
| C1514 | Torque Sensor Power Supply Voltage | Torque sensor malfunction | EPS warning light: Comes on | Ignition switch ON again | - |
|
| 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 occurs | There is no malfunction if this DTC is not output again after performing zero point calibration. |
|
| 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 | Clear DTC | 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. |
|
| C1517 | Torque Hold | Torque sensor malfunction | EPS warning light: Comes on | Ignition switch ON again | - |
|
| C1524 | Motor Terminal Voltage | Short (or open) in motor circuit or abnormal voltage in motor circuit | EPS warning light: Comes on | Ignition switch ON again | - |
|
| C1531 | ECU Malfunction | ECU internal malfunction
(CPU malfunction) |
EPS warning light: Comes on | Ignition switch ON again | - |
|
| C1532 | ECU Malfunction | ECU internal malfunction (Peripheral circuit malfunction) | EPS warning light: Comes on | Ignition switch ON again | - |
|
| C1533 | Temperature Sensor Circuit is Low or High | ECU internal malfunction
(Substrate temperature sensor malfunction) |
EPS warning light: Comes on | Ignition switch ON again | - |
|
| C1534 | EEPROM | ECU internal malfunction
(EEPROM error) |
EPS warning light: Comes on | Ignition switch ON again | - |
|
| C1535 | ECU Malfunction | ECU internal malfunction (Steering wheel location data error) | EPS warning light: Comes on | Ignition switch ON again | - |
|
| C1541 | Vehicle Speed Signal Malfunction | ·
Vehicle Speed Signal Abnormal Increase ·
While vehicle stopped, engine rpm exceeds threshold (Threshold: An engine speed of 4000 rpm or greater is detected within 5 minutes after engine is started, or an engine speed of 2100 rpm or greater is detected 5 minutes or more after engine is started.) for 300 seconds or more, cumulative. |
EPS warning light: Comes on | After normal confirmation | w/o ABS |
|
| C1542 | Vehicle Speed Signal Malfunction | ·
Vehicle Speed Signal Abnormal Decrease ·
While vehicle stopped, engine rpm exceeds threshold (Threshold: An engine speed of 4000 rpm or greater is detected within 5 minutes after engine is started, or an engine speed of 2100 rpm or greater is detected 5 minutes or more after engine is started.) for 30 seconds or more, cumulative. |
EPS warning light: Comes on | After normal confirmation | w/o ABS |
|
| C1551 | IG Power Supply Voltage | Open or short in IG power source circuit with ignition switch ON | EPS warning light: Comes on | After normal confirmation | - |
|
| C1552 | PIG Power Supply Voltage | PIG power source circuit malfunction | EPS warning light: Comes on | After normal confirmation | - |
|
| C1553 | PIG Power Supply Overvoltage | ·
PIG power source overvoltage ·
IG power source overvoltage |
EPS warning light: Comes on | After normal confirmation | - |
|
| C1554 | Power Supply Relay Failure | Power source relay circuit malfunction | EPS warning light: Comes on | Ignition switch ON again | - |
|
| C1555 | Motor Relay Welding Failure | Predriver (Motor relay circuit) malfunction | EPS warning light: Comes on | Ignition switch ON again | - |
|
| C1571 | Speed Sensor Malfunction (Test Mode DTC) | Speed sensor malfunction (Test mode). | EPS warning light: Does not come on | - | w/o ABS |
|
| C1581 | Assist Map Number Un-Writing | Assist map not written in power steering ECU assembly | EPS warning light: Comes on | Assist map written | - |
|
| C1582 | Assist Map Number Mismatch | Assist map number mismatch | EPS warning light: Does not come on | Ignition switch ON again | - |
|
| U0100 | Lost Communication with ECM / PCM "A" | Lost communication with ECM | EPS warning light: Does not come on | After normal confirmation | - |
|
| U0129 | Lost Communication with Brake System Control Module | Lost communication with skid control ECU (Brake actuator assembly) | EPS warning light: Comes on | After normal confirmation | w/ ABS |
|