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Handheld Code Scanners

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Handheld code scanners have become popular and their price has dropped considerably in the last few years, making such tools more practical for the weekend gearhead. With these units you can typically read fault codes, monitor various drivetrain parameters (both in real-time and take snapshots at a chosen time), and clear the fault codes in memory. Once you pull a fault code with a scanner, you can reference the OBD-II code descriptions and start to get some idea as to what the problem is.