So my truck trips the check engine light I pull the codes and it says the o2s have low voltage so I replaced the downstream ones and was going to replace the other 2 next payday now I am getting this see picture please help?

 

bump?

 

I doubt all 4 o2's went bad at the same time. Have you checked the fuses?

 

no to be honest but I cleared the codes and now it only shows the rear two that i just replaced the heaters are bad so im at a loss.