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Diagnostic Trouble Code Table

WARNING: This page is about a different car, the 2007 Lexus RX 350. However, it is still accessible from the selected car via links, so may be relevant.

If a trouble code is displayed during the DTC check, check the trouble areas listed for that code in the table below and proceed to the appropriate information.

Dynamic Laser Cruise Control System: 

DIAGNOSTIC TROUBLE CODE TABLE

DTC No. Detection Item Trouble Area
P0500  Vehicle Speed Sensor Malfunction
  1. Vehicle speed sensor
  2. Vehicle speed sensor signal circuit
  3. ECM
P0503  Vehicle Speed Sensor "A" Intermittent / Erratic / High
  1. Vehicle speed sensor
  2. Vehicle speed sensor signal circuit
  3. ECM
P0571  Brake Switch "A" Circuit
  1. Stop light switch
  2. Stop light switch circuit
  3. ECM
P0607  Control Module Performance ECM (This DTC indicates malfunction in ECM. When this DTC is output, it is necessary to replace ECM.)
P1570  Radar Sensor Malfunction Laser sensor
P1572  Improper Aiming of Radar Sensor Beam Axis Laser sensor
P1575  Warning Buzzer Malfunction
  1. Skid control buzzer
  2. Skid control buzzer circuit
  3. ABS & traction actuator (Skid control ECU)
P1578  Brake System Malfunction VSC system
P1615  Communication Error from Distance Control ECU to ECM
  1. Communication circuit
  2. Distance control ECU (Cruise control ECU)
  3. ECM
P1616  Communication Error from ECM to Distance Control ECU
  1. Communication circuit
  2. Distance control ECU (Cruise control ECU)
  3. ECM
P1617  Distance Control ECU Malfunction Distance control ECU (Cruise control ECU)
P1630  Communication Error from VSC to ECM
  1. Communication circuit
  2. ABS & traction actuator (Skid control ECU)
  3. ECM
P1631  Communication Error from ECM to VSC
  1. Communication circuit
  2. ECM
  3. ABS & traction actuator (Skid control ECU)
U0100  Lost Communication with ECM/PCM "A"
  1. Communication circuit
  2. ECM
  3. Distance control ECU (Cruise control ECU)
U0100  Lost Communication with ECM/PCM "A"
  1. Communication circuit
  2. ECM
  3. ABS & traction actuator (Skid control ECU)
U0122  Lost Communication with Vehicle Dynamics Control Module
  1. Communication circuit
  2. ABS & traction actuator (Skid control ECU)
  3. ECM
U0123  Communication Error of Yaw Rate Sensor
  1. Communication circuit
  2. Yaw rate sensor
  3. Distance control ECU (Cruise control ECU)
  4. ECM
U0126  Lost Communication with Steering Angle Sensor Module
  1. Communication circuit
  2. Steering angle sensor
  3. Distance control ECU (Cruise control ECU)
  4. ECM
U0235  Lost Communication with Cruise Control Front Distance Range Sensor
  1. Communication circuit
  2. Laser sensor
  3. Distance control ECU (Cruise control ECU)
U1101  Lost Communication with Distance Control ECU
  1. Communication circuit
  2. Distance control ECU (Cruise control ECU)
  3. ECM
U1102  Lost Communication with Radar Sensor
  1. Communication circuit
  2. Laser sensor
  3. Distance control ECU (Cruise control ECU)