Check engine light on, can egr be the cause and how to test it. on 1996 Nissan Pathfinder

Cleared code and code and check engine light came back on.

Get Your Car Fixed at a RepairPal Certified Shop.
We certify shops based on expertise, quality work, and verified customer reviews
2 answers 1 comment
what is codes and poss egr ports plugged
lets start with the code first. there are over 1500 possibilities

Roy
Code po58