What Happens If I Fail My Ignition Interlock Device Breath Test?

If you fail your Ignition Interlock Device’s breath test, your vehicle will not start. That is what these devices are designed to do. You have to blow into the machine before starting your vehicle to prove you are not under the influence of alcohol. If the machine picks up a BAC level above the pre-set minimum allowed if will not allow you to start your vehicle.

You will have to wait a designated time before trying again, called the lockout period. The time period can vary depending on the settings of the device.

You will also have to perform “rolling retests” blowing into the machine every 15-60 minutes while driving the vehicle. If you fail to do this or the machine picks up a BAC reading above the level programmed into the machine, your vehicle engine will shut off for the lockout period.