Nissan 240SX/Altima 1993-1998 Repair Guide

Clearing Codes


The easiest way to clear trouble codes is to turn the mode selector screw fully clockwise after all codes have been read.

Turn the mode adjusting screw to the fully counterclockwise position whenever the vehicle is in use.

The diagnostic memory will also be erased if the negative battery terminal is disconnected for 24 hours.