LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Lexus >> 2010 >> RX 350 FWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 6 (Active Torque Control 4WD System (Diagnostics - Introduction)) >> Active Torque Control 4WD System >> DIAGNOSTIC TROUBLE CODE CHART (From 8/2009) >> Diagnostic Trouble Code Chart
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Diagnostic Trouble Code Chart

WARNING: This page is about a different variant/trim than selected.
ACTIVE TORQUE CONTROL 4WD SYSTEM

DTC Code Detection Item Trouble Area See
C1241 Low Power Supply Voltage Malfunction 1. Battery
2. ECU-IG1 No. 2 fuse
3. Wire harness and connector (IG1 circuit, GND circuit)
4. Brake control system
5. CAN communication system
6. 4WD ECU
Refer to DTC C1241: Low Power Supply Voltage Malfunction
C1280 Engine Circuit Malfunction 1. SFI system
2. 4WD ECU
Refer to DTC C1280: Engine Circuit Malfunction
C1296 ABS Malfunction 1. Brake control system (speed sensor circuit)
2. Brake control system (deceleration sensor circuit)
3. Skid control ECU
4. 4WD ECU
Refer to DTC C1296: ABS Malfunction
C1297 Steering Angle Sensor 1. Steering angle sensor
2. CAN communication system
3. 4WD ECU
4. Wire harness and connector
Refer to DTC C1297: Steering Angle Sensor
C1298 Linear Solenoid Circuit 1. 4WD fuse
2. Wire harness and connector
3. Electromagnetic control coupling
4. 4WD ECU
Refer to DTC C1298: Linear Solenoid Circuit
C1299 Cancellation of 4WD Control 1. Tire size
2. Electromagnetic control coupling
3. 4WD ECU
Refer to DTC C1299: Cancellation of 4WD Control
U0073 Control Module Communication Bus Off 1. CAN communication system Refer to DTC U0073: Control Module Communication Bus Off; DTC U0100: Lost Communication with ECM / PCM "A"; DTC U0129: Lost Communication with Brake System Control Module
U0100 Lost Communication with ECM / PCM "A" 1. CAN communication system Refer to DTC U0073: Control Module Communication Bus Off; DTC U0100: Lost Communication with ECM / PCM "A"; DTC U0129: Lost Communication with Brake System Control Module
U0129 Lost Communication with Brake System Control Module 1. CAN communication system Refer to DTC U0073: Control Module Communication Bus Off; DTC U0100: Lost Communication with ECM / PCM "A"; DTC U0129: Lost Communication with Brake System Control Module