Check engine light

[Rox]

Help-
My ac compressor was making a racket so I bypassed it by putting on a shorter belt. All went as planned until I started it up and there it was
CHECK ENGINE LIGHT....

Why???? Any ideas??

[bartmanS4]

Would need to run the codes with an OBDII tester. Most parts stores will check the codes for free.

[Rox]

Sounds good I will but what could i have done to make it turn on? Does the compressor have another job besides the obvious?