ecu problem , check power train plzz helpp

[trad45]

hey everyone if anyone out there knows about the ecu in a vz help me out pls , i have a check power train problem anyways iv changed my ecu got it programmed , and still have this problem on my dash saying check power train anyways took back got it checked out agian it said o2 sensors bank 1 and bank 2 need changing anyways went and got new o2 sensors changed them myself but the check power train is still on the dash beeping , my question is do i need to put it back on the scanner to delete these codes i tryed disconecting the batt and that but still no go , do i have to put it on the scanner ?

thanks and would appriciate if anyone can help

[illlusion]

it should clear it self after a drive but best bet would be take it back and get it re scanned did u get the same o2 sensors as there were different types and did u change the right o2 banks the ones before the cats are the ones that most common to go