Air inlet flap fault diagnosis processing method and device and vehicle

The invention discloses an air inlet flap fault diagnosis processing method and device and a vehicle. The method comprises the steps that the actual opening degree and the target opening degree of air inlet turning plates are obtained, and the air inlet turning plates comprise the first turning plate and the second turning plate; carrying out fault diagnosis on the air inlet turning plate; and according to the fault diagnosis result of the air inlet turning plate, determining an opening signal of the air inlet turning plate as engine control input, and updating the target opening. According to the technical scheme, the control scheme of the engine can be adjusted in time according to the specific fault condition, the target opening degree of the engine is updated, the fault of the air inlet turning plate is handled in time, normal operation of the engine is guaranteed to the maximum extent during the fault, element loss during the fault is reduced, and the service life of the engine is prolonged. The service