96' Volvo 850 non turbo wagon. Check engine light came on and using the torque app on my phone it gives code
P3600. Looked online everywhere I could and cant find any info on this code. Can anyone help me out? Thanks.

 

Me neither (my List goes to P3549). But you can try this method and see what comes up.

 

I'm not finding anything on it either.
You might try a scanner from a parts store. Some will loan them for use in their lot. It might give you some info on what that code stands for.