How can i retrieve the fault codes from a 1993 Nissan Sentra?
You need to find some one that has a scanner but it is old enough that it is a specific cable only to Nissan’s. The government steeped in 1995 & made all cars sold in the US to be OBDII compatible so that a universal scanner & plug will do most everything. You can try Advanced Auto or Auto Zone they both have scanners & will do it free of charge.