hey everyone i know there are one or two other threads involving my problem but none seem to reallygive me a good understanding so here goes nothing (yes i realize im somewhat of a tech noob)..

my service engine soon light recently came on. Around the beginning of the summer i switched to turbo xs non resonated test pipes.. hooked up/installed .. no problems, no lights.. about a week later i switched from my pop charger to the full k&n typhoon system.. the filter was dirty so i cleaned it with the proper kit n procedure.. about an hour or two later the service light came on.. before checking the code i re-cleaned and reoiled the filter as well as checked the new tps.. i notice a bolt was loose on the drivers side causing a minor exhuast leak witch i immediately fixed..

ok now that thats been said heres my error readings.. there were 2 readings but they were both the same.. p1273 air fuel sensor 1 heater band... im wondering if it was cuased from the exhaust leak and i just need to reset the ecu but why would it come up as both (2) errors.. thanks in advance i know its not the easiest question to understand but ireally appreciate everyone who helps me out on here..