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 ...

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