Faults & software
Technical reference after licensing — firmware and fault guides.
52 guides
Faults & software
Recommended starting points
Popular fault guides
All 42 guides →Navigation & GPS
Battery & power
Camera & gimbal
Firmware & sensors
- Drone software hubDJI Fly, Pilot, Betaflight, INAV, ELRS and more.
- DJI Fly app guideUsing DJI Fly and flight requirements.
- DJI Pilot 2 enterprise guideEnterprise flights with Pilot 2.
- Betaflight FPV configurationBetaflight PID, rates and failsafe.
- INAV GPS FPV softwareINAV navigation and return-to-home.
- ExpressLRS (ELRS) guideELRS link for FPV systems.
- Drone faults encyclopedia42 fault guides: GPS, battery, FPV, ESC, gimbal, firmware, Remote ID.
- GPS not foundGPS not found: No GPS lock — compass, location or firmware. Full diagnostics guide for DJI and FPV. Step-by-step diagnostics (Navigation & GPS) for DJI, FP…
- Compass errorCompass error: Magnetometer error blocks GPS and stable flight. Calibration and interference removal. Step-by-step diagnostics (Navigation & GPS) for DJI, …
- IMU calibration errorIMU calibration error: Accelerometer/gyro calibration fails or flight is unstable. Step-by-step diagnostics (Navigation & GPS) for DJI, FPV and EASA-safe r…
- Hover drift and toilet bowlHover drift and toilet bowl: Aircraft drifts, flies in circles or cannot hold position. Step-by-step diagnostics (Navigation & GPS) for DJI, FPV and EASA-s…
- Flyaway and wrong RTHFlyaway and wrong RTH: Aircraft flies away or RTH lands in wrong place. Step-by-step diagnostics (Navigation & GPS) for DJI, FPV and EASA-safe repair.
- Drone won't connectDrone won't connect: App or controller cannot find aircraft. Wi-Fi, Bluetooth and USB pairing diagnostics. Step-by-step diagnostics (Link & FPV) for DJI, F…
- RC link lost / failsafeRC link lost / failsafe: Controller signal drops — failsafe triggers in flight. Step-by-step diagnostics (Link & FPV) for DJI, FPV and EASA-safe repair.
- FPV video lossFPV video loss: Analogue or digital FPV video cuts out in flight. Step-by-step diagnostics (Link & FPV) for DJI, FPV and EASA-safe repair.
- ExpressLRS won't bindExpressLRS won't bind: ELRS TX and RX modules will not bind. Step-by-step diagnostics (Link & FPV) for DJI, FPV and EASA-safe repair.
- Wi-Fi interference on 2.4 GHzWi-Fi interference on 2.4 GHz: RC or video link disrupted by 2.4 GHz networks. Step-by-step diagnostics (Link & FPV) for DJI, FPV and EASA-safe repair.
- Battery won't chargeBattery won't charge: LiPo/LiIon pack won't charge or charger shows error. Step-by-step diagnostics (Battery & power) for DJI, FPV and EASA-safe repair.
- Battery voltage sagBattery voltage sag: Sudden voltage drop under throttle — early low battery warning. Step-by-step diagnostics (Battery & power) for DJI, FPV and EASA-safe …
- Swollen LiPo batterySwollen LiPo battery: Swollen LiPo cell — stop using immediately. Step-by-step diagnostics (Battery & power) for DJI, FPV and EASA-safe repair.
- Battery not recognizedBattery not recognized: Drone or charger does not recognize battery. Step-by-step diagnostics (Battery & power) for DJI, FPV and EASA-safe repair.
- Short flight timeShort flight time: Battery drains much faster than specification. Step-by-step diagnostics (Battery & power) for DJI, FPV and EASA-safe repair.
- ESC / motor errorESC / motor error: Motors won't spin or stutter. ESC diagnostics, motor test and safe repair. Step-by-step diagnostics (Motors & ESC) for DJI, FPV and EASA…
- Motor desync in flightMotor desync in flight: Aircraft tumbles or drops — one or more motors lose sync. Step-by-step diagnostics (Motors & ESC) for DJI, FPV and EASA-safe repair.