I just replace the o2 sensor cause it was giving me a code 43 which is the heater and was also studdering between 3,000 and 5,000 rpms i put the new one in have had it in one day and it codes again tonight wtf is going on with this??


Thanks

Spencer

 

ttt

 

Did you reset your ECU after installing the O2 Sensor.

 

yes

 

Ran into the same problem a while ago. Didn't feel like plunking down the cash for a new OE HO2 sensor so I went with an inexpensive Bosch universal sensor. Ended up throwing a 43 that I couldn't get rid of. Trouble shot the damn thing and it ended up being the ECU itself. Somehow the Bosch sensor fried the damned thing.
I'd troubleshoot through the Helms first and if everything turns out tits, grab a spare ECU from someone and see if the code still sticks.