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Your inexpensive OBD-II scanner can tell you more than why the check-engine light is on

An OBD-II scanner can do much more than read check-engine codes. These five features can help you diagnose problems faster ...
SlashGear

3 Ways To Identify Check Engine Light Codes Without A Scanner

Onboard diagnostics (OBD) systems have been around since the 1980s and were developed to help limit harmful automotive exhaust emissions. Between 1988 and 1995, U.S.-built vehicles came with what's ...