Electronic Power Steering System Diagnostic Trouble Code Chart

Steering. Lexus Gs430, Gs300. Uzs190 Grs190
Power Steering. Lexus Gs430, Gs300. Uzs190 Grs190

Electronic Power Steering System -- Diagnostic Trouble Code Chart


HINT:
If a trouble code is displayed during the DTC check, inspect the circuit or part listened for that code.

ELECTRONIC POWER STEERING SYSTEM
DTC No.
Detection Item
Trouble Area
See page
C1511
Torque Sensor Circuit Malfunction
1. Wire harness or connector
2. Torque sensor (built into power
steering link assembly)
3. Power steering ECU assembly
Click here
C1512
Torque Sensor Circuit Malfunction
1. Wire harness or connector
2. Torque sensor (built into power
steering link assembly)
3. Power steering ECU assembly
Click here
C1513
Torque Sensor Circuit Malfunction
1. Wire harness or connector
2. Torque sensor (built into power
steering link assembly)
3. Power steering ECU assembly
Click here
C1515
Torque Sensor Zero Point Adjustment Undone
-
Click here
C1516
Torque Sensor Zero Point Adjustment Incomplete
-
Click here
C1521
Motor Circuit Malfunction
1. Wire harness or connector
2. Power steering motor (built into
power steering link assembly)
3. Power steering ECU assembly
Click here
C1522
Motor Circuit Malfunction
1. Wire harness or connector
2. Power steering motor (built into
power steering link assembly)
3. Power steering ECU assembly
Click here
C1523
Motor Circuit Malfunction
1. Wire harness or connector
2. Power steering motor (built into
power steering link assembly)
3. Power steering ECU assembly
Click here
C1524
Motor Circuit Malfunction
1. Wire harness or connector
2. Power steering motor (built into
power steering link assembly)
3. Power steering ECU assembly
Click here
C1525
Rotation Angle Sensor Initialization Undone
-
Click here
C1526
Rotation Angle Sensor Initialization Incomplete
-
Click here
C1528
Motor Rotation Angle Sensor Malfunction
1. Motor rotation angle sensor
(built into power steering link
assembly
2. Wire harness or connector
3. Power steering earth wire
4. Power steering ECU assembly
Click here
C1531
ECU Malfunction
1. Power steering ECU assembly
Click here
C1532
ECU Malfunction
1. Power steering ECU assembly
Click here
C1533
ECU Malfunction
1. Power steering ECU assembly
Click here
C1534
ECU Malfunction
1. Power steering ECU assembly
Click here
C1541
Vehicle Speed Signal Malfunction
1. Speed sensor circuit
2. Skid control ECU
3. CAN communication system
4. Power steering ECU assembly
Click here
C1551
IG Power Supply Voltage Malfunction
1. Power steering ECU assembly
Click here
C1552
PIG Power Supply Voltage Malfunction
1. EPS relay
2. ECU-B fuse
3. EPS fuse
4. Wire harness or connector
5. Power steering ECU assembly
Click here
C1554
Power Supply Relay Failure
1. EPS relay
2. ECU-B fuse
3. EPS fuse
4. Wire harness or connector
5. Power steering ECU assembly
Click here
C1555
Motor Relay Welding Failure
1. Power steering ECU assembly
Click here
C1567
Lost Communication between EPS ECU and VGRS ECU
1. Steering control ECU
2. Local CAN communication
Click here
C1581
Assist Map Number Un-Writing
1. Power steering ECU assembly
Click here
U0073
Control Module Communication Bus Off
1. CAN communication system
Click here
U0105
Lost Communication with ECM
1. CAN communication system
2. ECM (when only U0105 is
output)
Click here
U0121
Lost Communication with Anti-lock Brake System (ABS) Control Module
1. CAN communication system
2. Skid control ECU (when only
U0121 is output)
Click here
U0122
Lost Communication with Vehicle Dynamics Control Module
1. Skid control ECU
2. CAN communication system
Click here
U0130
Lost Communication with VGRS
1. Steering control ECU
2. CAN communication system
Click here