k i got an 02 simulator and now it says the o2 sensor has a hot circuit, but the car is running fine now... b4 it said it needed replace now it has hot circuit... what do i have to do to fix this?

 

what sensor before or after the cat? the one before the cat is used for fuel management and a simulator is not beneficial. the one after the cat is used ofr catalitic converter health check, and that one does nothing for fuel management.

 

THE ONE AFTER... I KNOW WHICH ONE AND STUFF BUT... I JUST NEED TO FIX IT CUZ MY CAT IS OFF EBAY AND DOESNT WORK GOOD.. SO ILL TAKE THE SIM OFF AND MAKE ONE W/ A SPARK PLUG...