POWER STEERING SYSTEM DIAGNOSTIC TROUBLE CODE CHART
Tech Tips
If any DTCs are displayed during the DTC check, inspect the circuit listed for those DTCs. For details of each DTC, refer to the page indicated in the DTC chart.
| DTC Code | Detection Item | Return-to-normal Condition | EPS Warning Light | See page |
|---|---|---|---|---|
| C1511 | Torque Sensor1 | Engine switch on (IG) again | *1 | |
| C1512 | Torque Sensor2 | Engine switch on (IG) again | *1 | |
| C1513 | Torque Sensor Deviation Excessive | Engine switch on (IG) again | *1 | |
| C1514 | Torque Sensor Power Supply Voltage | Engine switch on (IG) again | *1 | |
| C1515 | Torque Sensor Zero Point Adjustment Undone | Zero point calibration occurs | *1 | |
| C1516 | Torque Sensor Zero Point Adjustment Incomplete | Clear DTC | *1 | |
| C1517 | Torque Hold | Engine switch on (IG) again | *1 | |
| C1521 | Short in Motor Circuit | Engine switch on (IG) again | *1 | |
| C1522 | Power Supply Sensor | Engine switch on (IG) again | *1 | |
| C1523 | Current Deviation Excessive | Engine switch on (IG) again | *1 | |
| C1524 | Motor Terminal Voltage | Engine switch on (IG) again | *1 | |
| C1528 | Motor Rotation Angle Sensor | Engine switch on (IG) again | *1 | |
| C1531 | ECU Malfunction | Engine switch on (IG) again | *1 | |
| C1532 | ECU Malfunction | Engine switch on (IG) again | *1 | |
| C1533 | Temperature Sensor Circuit is Low or High | Engine switch on (IG) again | *2 | |
| C1534 | EEPROM | After normal confirmation | *3 | |
| C1541 | Vehicle Speed Signal | After normal confirmation | *1 | |
| C1551 | IG Power Supply Voltage | After normal confirmation | *1 | |
| C1552 | PIG Power Supply Voltage | Engine switch on (IG) again | *1 | |
| C1554 | Power Supply Relay Failure | Engine switch on (IG) again | *1 | |
| C1555 | Motor Relay Welding Failure | Engine switch on (IG) again | *1 | |
| C1581 | Assist Map Number Un-Writing | Assist map written | *1 | |
| C1582 | Assist Map Number Mismatch | Clear assist map and assist map written | *2 | |
| U0100 | Lost Communication with ECM / PCM "A" | After normal confirmation | *4 | |
| U0129 | Lost Communication with Brake System Control Module | After normal confirmation | *1 |
Tech Tips
-
*1: Warning light comes on
-
*2: Warning light turns off
-
*3: Torque and resolver sensor adjustment is set to the default value and control is continued. In this case, the warning light illuminates.
-
*4: 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.