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Home >> Lexus >> 2015 >> ES 300h >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Cruise Control Systems >> Dynamic Radar Cruise Control System (Diagnostic Codes & Circuit Tests) >> Dynamic Radar Cruise Control System >> DTC U0125: Lost Communication with Yaw Rate Sensor Module; DTC U0126: Lost Communication with Steering Angle Sensor Module; DTC U0129: Lost Communication with Brake System Control Module; DTC U0293: Lost Communication with HV ECU; DTC U1104: Lost Communication with Driving Support ECU [08/2014 - ] >> Description
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DTC U0125: Lost Communication with Yaw Rate Sensor Module; DTC U0126: Lost Communication with Steering Angle Sensor Module; DTC U0129: Lost Communication with Brake System Control Module; DTC U0293: Lost Communication with HV ECU; DTC U1104: Lost Communication with Driving Support ECU [08/2014 - ]: Description

These DTCs are output when a communication malfunction occurs between the sensors and ECUs.

DTC No. DTC Detection Condition Trouble Area
U0125 While dynamic radar cruise control is either preparing for operation or operating and power switch is on (IG), communication between yaw rate sensor and driving support ECU assembly stops for 1 second or more
  • Yaw rate and acceleration sensor
  • CAN communication system
  • Driving support ECU assembly
U0126 While dynamic radar cruise control is either preparing for operation or operating and power switch is on (IG), communication between steering angle sensor and driving support ECU assembly stops for 1 second or more
  • Steering angle sensor
  • CAN communication system
  • Driving support ECU assembly
U0129 While dynamic radar cruise control is either preparing for operation or operating and power switch is on (IG), communication between skid control ECU (brake booster with master cylinder assembly) and driving support ECU assembly stops for 3 seconds or more
  • Skid control ECU (brake booster with master cylinder assembly)
  • CAN communication system
  • Driving support ECU assembly
U0293 While dynamic radar cruise control is either preparing for operation or operating and power switch is on (IG), communication between power management control ECU and driving support ECU assembly or skid control ECU (brake booster with master cylinder assembly) stops for 1 second or more
  • Power management control ECU
  • CAN communication system
  • Driving support ECU assembly
  • Skid control ECU (brake booster with master cylinder assembly)
U1104 While dynamic radar cruise control is either preparing for operation or operating and power switch is on (IG), communication between driving support ECU assembly and millimeter wave radar sensor assembly, power management control ECU or skid control ECU (brake booster with master cylinder assembly) stops for 1 second or more
  • Driving support ECU assembly
  • CAN communication system
  • Millimeter wave radar sensor assembly
  • Power management control ECU
  • Skid control ECU (brake booster with master cylinder assembly)