Did your vehicle's check-engine light just pop on? An OBD-II scanner can provide some direction. We tested a handful to find ...

Read diagnostic trouble codes (DTC) with the Black and Decker SmartScan OBD II Vehicle Scanner. For more on this code reader, check out Off-Road Magazine.

Already an affordable option, right now you can save over $25 on this diagnostic code reader from trusted brand Ancel.

Discover what an OBD2 scanner is and how to use it to diagnose and fix car problems before they escalate into major repairs.

This is one of the only, if not the only CarPlay compatible OBD scanner apps on the App Store.