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Comparing code readers and scan tools

Q. I have a newer Toyota Camry and an older Ford F-150. What does a scanner do that a code reader cannot do? Can you recommend one that you have found acceptable? A. A code reader will read most ...
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How to Use a Diagnostic Car Code Reader

Imagine quickly diagnosing why your car's check engine light is on. A scan tool, also known as a trouble code reader, can ...