If you're a personal user, knowing how to read and interpret OBD codes is a trick that's well worth having up your sleeve for those times when the Check Engine light in your car suddenly comes on ...

Did you use an OBD2 scanner on your car to figure out why the check engine light is on, only to get the P0303 code? Here's what it means, plus possible fixes.

How to get your OBD2 codes read at an auto parts store Many auto parts stores offer code readings as a free service. Advance Auto Parts, AutoZone, and O’Reilly are among the stores that will.

Unsure of what you're looking for when you pull the dipstick out of your engine? Worried about oil consumption? Here's our guide to monitoring oil levels.

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While your check engine light is obviously meant for engine issues, it can often give you clues to problems in other parts of the car as well.

Normally, when the check engine light comes on, the computer will store data that – when read by the mechanic’s scan tool – will tell him which component reported the problem and what needs ...

In 2018 the two most common check engine repair codes were "replace ignition coil (s) and spark plug (s)" and "replace oxygen sensor" — each accounting for 5.8 percent of repairs.