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 ...

Toyota's check engine light can indicate transmission issues in addition to engine problems. Codes such as P0613, P0720, and ...

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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 ...