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HOMESERVICE MANUALSTOYOTA2025HIGHLANDER HYBRID XLEREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCETESTING & DIAGNOSISENGINE CONTROL SYSTEM (A25A-FXS) - DIAGNOSTIC CODES (P05B1-06DA)SFI SYSTEMDTC P0607-47: CONTROL MODULE PERFORMANCE BANK 1 WATCHDOG/SAFETY MCU FAILURE; DTC P0607-87: CONTROL MODULE PERFORMANCE BANK 1 MISSING MESSAGE [12/2019 - 10/2022]PROCEDURE
2025 Toyota Highlander Hybrid XLE

DTC P0607-47: Control Module Performance Bank 1 Watchdog/Safety MCU Failure; DTC P0607-87: Control Module Performance Bank 1 Missing Message [12/2019 - 10/2022]: Procedure

2025 Toyota Highlander Hybrid XLESECTION Procedure
  1. CLEAR DTC 
    1. Clear the DTCs.

      Powertrain > Engine > Clear DTCs 

    2. Turn the ignition switch off.

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  2

  2. READ OUTPUT DTC (DTC P0607-47 OR P0607-87) 
    1. Disconnect the cable from the negative (-) auxiliary battery terminal and wait for 1 minute.
    2. Connect the cable to the negative (-) auxiliary battery terminal.
    3. Wait 1 second or more.
    4. Read the DTCs.

      Powertrain > Engine > Trouble Codes 

      Result

      Result Proceed to
      DTCs are not output A
      DTC P0607-47 or P0607-87 is output B

    Result: 

    A 

    CHECK FOR INTERMITTENT PROBLEMS 

    Refer to CHECK FOR INTERMITTENT PROBLEMS [12/2019 - ]

    Result: 

    B 

    REPLACE ECM 

    Refer to REMOVAL [12/2019 - 10/2022]

RENDER: 1.0x

NO RELATED

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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.