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Home >> Toyota >> 2023 >> Prius LE >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Communication Devices >> Can Communication System (HEV) - Circuit Tests (1 Of 3) & Diagnostic Codes >> CAN COMMUNICATION SYSTEM (for 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 U1150-87: Lost Communication with Hybrid Powertrain Control Module (ch2) Missing Message; DTC U1176-87: Lost Communication with Gear Shift Control Module "A" (Powertrain Bus) Missing Message; DTC U117B-87: Lost Communication with Hybrid/EV Battery Energy Control Module "A" (ch2) Missing Message [12/2022 - ] >> Description
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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 U1150-87: Lost Communication with Hybrid Powertrain Control Module (ch2) Missing Message; DTC U1176-87: Lost Communication with Gear Shift Control Module "A" (Powertrain Bus) Missing Message; DTC U117B-87: Lost Communication with Hybrid/EV Battery Energy Control Module "A" (ch2) Missing Message [12/2022 - ]: Description

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 and the inverter with converter assembly.
  • CAN main/branch bus lines or connector
  • Hybrid vehicle control ECU
  • Inverter with converter assembly
  • No. 2 junction connector
 DTC Output from
  • Hybrid vehicle control ECU
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. 6 global CAN junction connector
  • No. 2 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 and the shift control actuator assembly.
  • CAN main/branch bus lines or connector
  • Hybrid vehicle control ECU
  • Shift control actuator assembly
  • No. 6 Global CAN junction connector
  • No. 2 junction connector
 DTC Output from
  • Hybrid vehicle control ECU
U1150-87 Lost Communication with Hybrid Powertrain Control Module (ch2) Missing Message Communication stops between the battery ECU assembly and the hybrid vehicle control ECU.
  • CAN main/branch bus lines or connector
  • Battery ECU assembly
  • Hybrid vehicle control ECU
  • No. 6 global CAN junction connector
  • No. 2 junction connector
 DTC Output from
  • Battery ECU assembly
U1176-87 Lost Communication with Gear Shift Control Module "A" (Powertrain Bus) Missing Message Communication stops between the hybrid vehicle control ECU and the transmission floor shift assembly.
  • CAN main/branch bus lines or connector
  • Hybrid vehicle control ECU
  • Transmission floor shift assembly
  • No. 6 Global CAN junction connector
  • No. 2 junction connector
 DTC Output from
  • Hybrid vehicle control ECU
U117B-87 Lost Communication with Hybrid/EV Battery Energy Control Module "A" (ch2) Missing Message Communication stops between the hybrid vehicle control ECU and the battery ECU assembly.
  • CAN main/branch bus lines or connector
  • Hybrid vehicle control ECU
  • Battery ECU assembly
  • No. 6 global CAN junction connector
  • No. 2 junction connector
 DTC Output from
  • Hybrid vehicle control ECU
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