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Home >> Lexus >> 2024 >> TX 350 Base, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 119 (Can Communication System - Circuit Tests (1 Of 4) & Diagnostic Codes) >> CAN COMMUNICATION SYSTEM (for 1Motor-HEV Model) >> DTC U01BD-87: Lost Communication with DC/DC Converter Control Module "C" Missing Message; DTC U0291-00: Lost Communication with Gear Shift Control Module "B" (System 2) Missing Message; DTC U0291-87: Lost Communication with Gear Shift Control Module "B" Missing Message; DTC U029A-87: Lost Communication with Hybrid/EV Battery Sensor Module Missing Message; DTC U1176-87: Lost Communication with Gear Shift Control Module "A" (ch2) Missing Message [09/2023 - ] >> Description

DTC U01BD-87: Lost Communication with DC/DC Converter Control Module "C" Missing Message; DTC U0291-00: Lost Communication with Gear Shift Control Module "B" (System 2) Missing Message; DTC U0291-87: Lost Communication with Gear Shift Control Module "B" Missing Message; DTC U029A-87: Lost Communication with Hybrid/EV Battery Sensor Module Missing Message; DTC U1176-87: Lost Communication with Gear Shift Control Module "A" (ch2) Missing Message [09/2023 - ]: Description

WARNING: This page is about a different car, the 2024 Lexus TX 500h. However, it is still accessible from the selected car via links, so may be relevant.
DTC No. Detection Item DTC Detection Condition Trouble Area Note
U01BD-87 Lost Communication with DC/DC Converter Control Module "C" Missing Message Communication stops between the hybrid vehicle control ECU assembly and the EV converter assembly.
  • CAN main/branch bus lines or connector
  • Hybrid vehicle control ECU assembly
  • EV converter assembly
  • No. 10 CAN junction connector
 DTC Output from
  • Hybrid vehicle control ECU assembly
U0291-00 Lost Communication with Gear Shift Control Module "B" (System 2) Missing Message Communication stops between the transmission floor shift assembly and the shift control actuator assembly.
  • CAN main/branch bus lines or connector
  • Transmission floor shift assembly
  • Shift control actuator assembly
  • No. 10 CAN junction connector
 DTC Output from
  • Transmission floor shift assembly
U0291-87 Lost Communication with Gear Shift Control Module "B" Missing Message Communication stops between the hybrid vehicle control ECU assembly and the shift control actuator assembly.
  • CAN main/branch bus lines or connector
  • Hybrid vehicle control ECU assembly
  • Shift control actuator assembly
  • No. 10 CAN junction connector
 DTC Output from
  • Hybrid vehicle control ECU assembly
U029A-87 Lost Communication with Hybrid/EV Battery Sensor Module Missing Message Communication stops between the hybrid vehicle control ECU assembly and the battery voltage sensor.
  • CAN main/branch bus lines or connector
  • Hybrid vehicle control ECU assembly
  • Battery voltage sensor
  • No. 10 CAN junction connector
 DTC Output from
  • Hybrid vehicle control ECU assembly
U1176-87 Lost Communication with Gear Shift Control Module "A" (ch2) Missing Message Communication stops between the hybrid vehicle control ECU assembly and the transmission floor shift assembly.
  • CAN main/branch bus lines or connector
  • Hybrid vehicle control ECU assembly
  • Transmission floor shift assembly
  • No. 10 CAN junction connector
 DTC Output from
  • Hybrid vehicle control ECU assembly
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