LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Lexus >> 2007 >> LS 460L >> Repair and Diagnosis >> Accessories & Equipment >> Cruise Control Systems >> Cruise Control >> Dynamic Radar Cruise Control System >> Diagnostic Trouble Code Chart
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Diagnostic Trouble Code Chart

HINT:

If a trouble code is displayed during the DTC check, inspect the trouble areas listed for that code.

Dynamic radar cruise control system 

DIAGNOSTIC TROUBLE CODE CHART

DTC Code Detection Item Trouble Area
C1A01  Driving Support ECU
  • Driving support ECU
DTC C1A02   Vehicle Information Not Obtained
  • Driving support ECU
  • Combination meter
DTC C1A03   Driving Support ECU Internal Logical Error
  • Driving support ECU
DTC C1A05   Stop Light Switch Circuit
  • Stop light switch
  • Stop light switch circuit
  • Driving support ECU
DTC C1A06   Stop Light Switch Input Circuit
  • Driving support ECU
DTC C1A0A   Front Radar Sensor Region Code Mismatch
  • Front millimeter wave radar sensor
  • Combination meter
  • Driving support ECU
DTC C1A10   Front Radar Sensor
  • Front millimeter wave radar sensor
  • Driving support ECU
DTC C1A11   Front Radar Sensor Incorrect Axial Gap
  • Front millimeter wave radar sensor
  • Driving support ECU
DTC C1A14   Front Radar Sensor Beam Axis Not Adjusted
  • Front millimeter wave radar sensor
  • Driving support ECU
DTC C1A40   ENG / EHV Device
  • SFI system
  • ECT system
  • ECM
  • Driving support ECU
DTC C1A41   Brake Request Value Mismatch between ENG / EHV and Driving Support ECU
  • Anti-lock brake system
  • SFI system
  • ECM
  • Skid control ECU
  • Driving support ECU
DTC C1A4A   Skid Control Buzzer Circuit
  • Skid control buzzer
  • Skid control buzzer circuit
  • Skid control ECU
  • Driving support ECU

 
DTC U0100   Lost Communication with ECM/ PCM "A"
  • ECM
  • CAN communication circuit
  • Driving support ECU
DTC U0122  Lost Communication with Vehicle Dynamics Control Module
  • Skid control ECU
  • CAN communication system
  • Driving support ECU
DTC U0123   Lost Communication with Yaw Rate Sensor Module
  • Yaw rate sensor
  • CAN communication system
  • Driving support ECU
DTC U0126   Lost Communication with Steering Angle Sensor Module
  • Steering angle sensor
  • CAN communication system
  • Driving support ECU
DTC U0235   Lost Communication with Cruise Control Front Distance Range Sensor
  • Front millimeter wave radar sensor
  • CAN communication system
  • Driving support ECU
DTC U1104   Lost Communication with Driving Support ECU
  • Driving support ECU
  • CAN communication circuit
  • Front millimeter wave radar sensor
  • ECM
  • Skid control ECU