MIXED_MOTOR_BOOT_FAILURE

published Last Updated: Oct 9, 2026 HW: EV2HW: EV3

Background

Use this guide when the MIXED_MOTOR_BOOT_FAILURE validator check fails. This check may fail if the Mixed Motor fails to boot into Main app from Bootloader. After power-cycling the Aircraft, run a Health Checks mission and follow the troubleshooting steps in the next section.

Troubleshooting Steps

graph TD
    power-cycle-aircraft["<small><b>Step 1</b></small><br/>Action: Power cycle the aircraft."]
    run-health-checks-mission["<small><b>Step 2</b></small><br/>Action: Run a Health Checks mission."]
    did-aircraft-pass-health-checks{"<small><b>Step 3</b></small><br/>Question: Did the aircraft pass health checks?"}
    aircraft-may-return-to-service["<small><b>Step 4</b></small><br/>Action: The aircraft may return to service."]
    escalate-to-firmware-platform{{"<small><b>Step 5</b></small><br/>Escalation: Escalate to P2 Firmware Platform On C..."}}
    power-cycle-aircraft --> run-health-checks-mission
    run-health-checks-mission --> did-aircraft-pass-health-checks
    did-aircraft-pass-health-checks -->|Yes| aircraft-may-return-to-service
    did-aircraft-pass-health-checks -->|No| escalate-to-firmware-platform
    style power-cycle-aircraft fill:#dcfce7,stroke:#22c55e,color:#14532d
    style run-health-checks-mission fill:#dcfce7,stroke:#22c55e,color:#14532d
    style did-aircraft-pass-health-checks fill:#dbeafe,stroke:#3b82f6,color:#1e3a5f
    style aircraft-may-return-to-service fill:#dcfce7,stroke:#22c55e,color:#14532d
    style escalate-to-firmware-platform fill:#fef3c7,stroke:#f59e0b,color:#78350f

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1 action

Power cycle the aircraft.

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