location of egr valve

I suggest you look at this info before replacing any parts, just to be sure you don't replace any un-needed parts: http://repairpal.com/OBD-Code-P0402 To find the EGR Valve, you might find a free manual here: http://bit.ly/autozone_repair_info or go to http://bit.ly/alldata_repair_manuals or http://bit.ly/mitchell_repair_manuals_online and get an online repair manual subscription.

I have a 99 camry 3.0 V6. It seems to me that the EGR valve should be located somwhere on the intake. It seems that it should have a pipe that connects the intake to the exhaust. Since it is letting exhaust into the intake that seems like basic logic to me. Look for some connection between the intake and the exhaust, with a diaphram assembly on it.