List of some common check engine light codes related to the engine and emissions system. You can get your car or truck computer scanned for free at most of the large national parts store chains. Read the description of what causes these codes and some possible solutions to fix it yourself.

We are always adding to this list, so check back soon !

Newer cars and trucks have a little bit different code number. For example- a code that starts with P0XXX, is the same as code P1XXX.