Provided is a vehicle control device comprising a plurality of constant voltage generation circuits, wherein a specified voltage is supplied to a load even if any one of the constant voltage generation circuits outputs a voltage that exceeds the specified voltage.This vehicle control device is provided with a first and second constant voltage generation circuit that each output a voltage to a load, and when either the first or second constant voltage generation circuit outputs a voltage that exceeds a reference voltage, cuts off the output of that constant voltage generation circuit from the load.