Ok guys, i know this is like the 2nd time i've started a new thread in the past like 3 days, but i'm totally stuck..
My car keeps throwing the code 'P0135 and P0155'.
'O2 Sensor Heater Circuit malfunction'
So that means both of my front o2 sensors are having problems.
I replaced ALL 4 02...
I'm still mostly a newbie, so I'm not sure what to do for these codes. None of these problems came up until a couple days after the LTs and Midpipe got installed.
I was told that 155, 161, and 430 all pertain to the cats and that one might be malfunctioning. I...