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Home >> Toyota >> 2025 >> Prius LE >> Repair and Diagnosis (Single Page) >> Brakes >> Mechanical - Hydraulic >> Electronically Controlled Brake System - Diagnostic Codes (6 Of 6), Circuit Tests & Symptom Tests >> Electronically Controlled Brake System >> DTC U0110-00: Lost Communication with Drive Motor Control Module "A"; DTC U0129-87: Lost Communication with Brake System Control Module "A" Missing Message; DTC U0293-00: Lost Communication with Hybrid/EV Powertrain Control Module; DTC U1106-00: Lost Communication with Electric Parking Brake Module; DTC U114A-00: Lost Communication with Sub Battery System (System 2) Missing Message; DTC U1150-00: Lost Communication with Hybrid Powertrain Control Module (ch2); DTC U117D-87: Lost Communication with Brake System Control Module (ch4) Missing Message [03/2023 - ] >> Procedure
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DTC U0110-00: Lost Communication with Drive Motor Control Module "A"; DTC U0129-87: Lost Communication with Brake System Control Module "A" Missing Message; DTC U0293-00: Lost Communication with Hybrid/EV Powertrain Control Module; DTC U1106-00: Lost Communication with Electric Parking Brake Module; DTC U114A-00: Lost Communication with Sub Battery System (System 2) Missing Message; DTC U1150-00: Lost Communication with Hybrid Powertrain Control Module (ch2); DTC U117D-87: Lost Communication with Brake System Control Module (ch4) Missing Message [03/2023 - ]: Procedure

  1. CHECK DTC (HEALTH CHECK) 
    1. Perform the Health Check using the GTS.

      Result

      Result Proceed to
      DTCs for related systems are output together with DTC U0110-00, U0129-87, U0293-00, U1106-00, U114A-00, U1150-00 or U117D-87. A
      DTC U0110-00, U0129-87, U0293-00, U1106-00, U114A-00, U1150-00 or U117D-87 is output. B
      DTCs are not output. C

    Result: 

    GO TO DIAGNOSTIC TROUBLE CODE CHART (RELATED SYSTEM) 

    Result: 

    INSPECT CAN COMMUNICATION SYSTEM 

    for HEV Model: Refer to HOW TO PROCEED WITH TROUBLESHOOTING [12/2022 - ]

    for PHEV Model: Refer to HOW TO PROCEED WITH TROUBLESHOOTING [03/2023 - ]

    Result: 

    USE SIMULATION METHOD TO CHECK 

    Refer to HOW TO PROCEED WITH TROUBLESHOOTING [12/2022 - ]