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Diagnostic Trouble Code Chart

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 article.

Dynamic Radar Cruise Control System 

DIAGNOSTIC TROUBLE CODE CHART

DTC Code Detection Item Trouble Area
P0500  Vehicle Speed Sensor Malfunction
  • Vehicle speed sensor
  • Vehicle speed sensor signal circuit
  • ECM
P0503  Vehicle Speed Sensor "A" Intermittent / Erratic / High
  • Vehicle speed sensor
  • Vehicle speed sensor signal circuit
  • ECM
P0571  Brake Switch "A" Circuit
  • Stop light switch
  • Stop light switch circuit
  • ECM
P0571  Stop Light Switch Circuit Malfunction
  • BRK-LP relay
  • BRK-LP relay circuit
  • Skid control ECU
  • Combination circuit
  • Distance control ECU
  • ECM
P0575  Cruise Control Input Circuit
  • ECM (This DTC indicates malfunction in ECM When this DTC is output, it is necessary to replace ECM)
P1570  Radar Sensor Malfunction
  • Millimeter wave radar sensor
P1572  Improper Aiming of Radar Sensor Beam Axis
  • Millimeter wave radar sensor
P1575  Warning Buzzer Malfunction
  • Skid control buzzer
  • Skid control buzzer circuit
  • Skid control ECU
P1578  Brake System Malfunction
  • VSC system
P1615  Communication Error from Distance Control ECU to ECM
  • Distance control ECU
  • ECM
P1616  Communication Error from ECM to Distance Control ECU
  • ECM
  • Distance control ECU
P1617  Distance Control ECU Malfunction
  • Distance control ECU
P1630  Communication Error from VSC to ECM
  • Skid control ECU
  • ECM
P1631  Communication Error from ECM to VSC
  • ECM
  • Skid control ECU
U0100  Lost Communication with ECM / PCM "A"
  • Communication circuit
  • ECM
  • Skid control ECU
U0122  Lost Communication with Vehicle Dynamics Control Module
  • Communication circuit
  • Skid control ECU
  • ECM
U0123  Lost Communication with Yaw Rate Sensor Module
  • Communication circuit
  • Yaw rate and acceleration sensor
  • Distance control ECU
  • ECM
U0126  Lost Communication with Steering Angle Sensor Module
  • Communication circuit
  • Steering angle sensor
  • Distance control ECU
  • ECM
U1101  Lost Communication with Distance Control ECU
  • Communication circuit
  • Distance control ECU
  • ECM
U0235  Lost Communication with Cruise Control Front Distance Range Sensor
  • Communication circuit
  • Millimeter wave radar sensor
  • Distance control ECU
U1102  Lost Communication with Radar Sensor
  • Communication circuit
  • Millimeter wave radar sensor
  • Distance control ECU