O2 sensor code problems help
Thread Starter
Racer
Joined: Mar 2007
Posts: 323
Likes: 0
From: Austin Texas
O2 sensor code problems help
so i got a 2000 vet just did a motor swap to a ls3.. before i did the swap i was getting codes for o2 sensor heater circut bank 1 sensor 1 and bank 2 sensor 1, also bank 2 sensor 1 no activity.. i figured it just needed new sensors.. i do the motor swap change out o2 sensors and flash computer and they come back so i see that the harnesses got a little melted on the lt's so i replace the harnesess wrap them in heat wrap and make sure they dont hit the exghaust,, they come back again,, i check all the fusess and find a blown on 10amp in the floor board box and the car starts running better but still these three codes keep coming back.. what tha heck ,, i have also checked all the grounds on the frame under the hood and gone so far as to add extra groung straps to all of them off of the body of the altenator and the batt even one directly to the LT's from the engine block,, im loosing my mind trying to figure this out.. its pull the motor out and check every square inch of the wires or replace the computer,, please does some one else have any idea of what could be going on??? (bye the way texas speed built the motor and it a rocket!!)
Melting Slicks
Joined: Feb 2007
Posts: 3,266
Likes: 8
From: Indian Rocks Beach FL
St. Jude Donor '08-'09-'10
The rear sensors are more responsive so they heat faster and eliminate the slow response code you normally get from the fronts with LT's. The rear sensors are not necessary for the system to operate so people just tune them out to eliminate codes.
