My first thought is that possibly the OBDII port is not receiving power. Does your cigarette lighter work? If not, you probably have a blown fuse - replace it. The same fuse powers the cigarette lighter and OBDII port.
If that was the problem, you'll need to plug in the unit with the ignition key ON (engine off) to let it boot properly.
- Jack
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2024 F150 Platinum SCrew 3.5L PowerBoost FX4, Peragon Tonneau Cover, LineX Bed, 35% Window Tint on All Sides and Rear, Full Nose Paint Protection Film, Husky Mud Guards, Lasfit Floor Liners, VIOFO Dash Cam
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