DTC U0322-51: Software Incompatibility with Body Control Module Not Programmed; DTC U0322-57: Software Incompatibility with Body Control Module Invalid/Incompatible Software Component [03/2023 - ]: Procedure

2025 Toyota Prius Plug-In Hybrid XSE PremiumSECTION Procedure
  1. CHECK FOR DTCs (HEALTH CHECK) 
    1. Using the GTS, perform a health check.

      OK

      DTCs are not output by any system other than the driver monitor camera system (Driver Monitor Camera Control).

      Result

      Result Proceed to
      U0322-51 and U0322-57 are not output by a system other than the driver monitor system A
      U0322-51 or U0322-57 is output by a system other than the driver monitor system B

    Result: 

    REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU). Refer to  REMOVAL [03/2023 - ] 

    Result: 

    See step  2

  2. REPLACE DRIVER MONITOR ECU ASSEMBLY 

    HINT: 

    Refer to REMOVAL [03/2023 - ]

    Result

    Proceed to
    NEXT

    Result: 

    NEXT 

    See step  3

  3. CLEAR DTC 
    1. Clear the DTCs.

      Chassis > Driver Monitor Camera Control > Clear DTCs 

    2. Turn the ignition switch off.

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  4

  4. CHECK FOR DTC 
    1. Check for DTCs.

      Chassis > Driver Monitor Camera Control > Trouble Codes 

      Result

      Result Proceed to
      DTCs are not output A
      DTCs are output B

    Result: 

    END (DRIVER MONITOR ECU ASSEMBLY IS DEFECTIVE) 

    Result: 

    REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU). Refer to  REMOVAL [03/2023 - ] 

RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • You smell fuel, burning insulation, or see smoke.
  • Brakes feel soft, pull hard to one side, or make grinding noises.
  • The engine overheats, stalls repeatedly, or misfires under load.
  • You are missing required tools, torque specs, or safe lifting equipment.
  • You are not confident in the next step or safety outcome.