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 ...

Some 2009 Borrego SUVs with 3.8-liter engines may turn on the Check Engine light and log trouble code P2135 (Throttle Position Sensor 1/2 Voltage Correlation) in computer memory. One likely cause for ...