What's the best Android app for understanding what my car's check engine light actually means?

RepairSolutions2 is a vehicle diagnostic tool designed to give car owners a clear understanding of their vehicle's fault codes and potential issues. The app pairs with Innova's compatible hardware, which plugs into a car's OBD-II port, to pull data directly from the vehicle's computer. For anyone staring at a mysterious check engine light, the app's primary function is to read and clear diagnostic trouble codes (DTCs). It goes beyond simply displaying a code like 'P0420' by providing a detailed description of what that code typically indicates—such as a potential catalytic converter efficiency problem—which demystifies the warning and informs the next steps. A key feature users praise is the predictive repairs function, which suggests likely fixes based on the code and vehicle data, helping to gauge repair complexity and cost. Reviews indicate the interface simplifies complex diagnostic data, breaking down live sensor readings and freeze frame data captured when a fault occurs. However, the app's full functionality requires specific Innova hardware, which is an additional cost, and some users note that Bluetooth connectivity can occasionally be finicky with older vehicle models. For DIY enthusiasts or those wanting to avoid unnecessary mechanic trips for minor issues, RepairSolutions2 offers a professional-grade diagnostic overview in a more accessible format.