Where to plug in a code reader on a 98 es 300 Lexus?

To plug in a code reader on a 1998 Lexus ES 300, locate the OBD-II diagnostic port, which is typically found beneath the dashboard on the driver's side, near the steering column. You may need to remove a cover panel to access it. Once you find the port, simply connect your code reader to it and turn the ignition to the "ON" position without starting the engine to read the codes.