I am getting a P0139 CEL code and need HELP! Please......
Does the 1Mohm resistor across the rear O2 sensor by itself help.
I was wondering if you have pics, sketch, drawing, etc. on how to do the CEL fix with the 1Mohm resistor on the O2 sensor or could describe it in more detail on how to do it. I'm a bit of a newbie and could use all the instruction I could get.
I got the CEL on my '04 WRX after installing a Scoobysport downpipe w/CEL fix and an STI uppipe w/CEL fix along with a neutron axle back exhaust, 3/16 mod and lastly a GP Moto elbow and K&N filter replacing the silencer box and stock elbow completely.
Thanks much for any help you could give me.