Discounts like this don’t usually last for long, so visit Amazon’s site today and get your hands on the Umeija OBD2 ...

The Motopower MP69040 OBD2 Diagnostic Scan Tool is built for that exact job and is currently on sale at Amazon for $30 during Prime Day, a 40% drop from its original $50 price.

Amazon Prime Day is here! We cleaned out Amazon's garage to find the best deals on the car gear so you don't have to.