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Download and install the corresponding OBD2 app on your phone. There are various apps available for both Android and iOS ...

Learn what that pesky dashboard light means before heading to the shop, and maybe save some cash in the process.

The best OBD-II ... other scanner we've tested. Tom is the Tom's Guide UK Phones Editor, covering everything from new hardware to the best mobile apps. He's also an avid electric car enthusiast ...