My 2015 f-150 2.7 xlt has the following 4 o2 sensor codes at the same time (both banks both sensors)



P0036

P0161

P0152

P0050

I checked the fuse I believed to be the right one (95)

while looking around I noticed a bunch of squirrel debris.. and came across this harness that was a bit chewed up, does anyone know if this is a good clue? Didn’t notice any completely broken leads but definitely some exposed strands on at least 2 wires

(driver side closer to cab)

 

Codes are for Bank 2, #1 and #2 sensors.
Heater circuits open/faulty and Ox readings are faulty. Two separate functions in fault.
This will show up as shifted Long Term Fuel Tables and affect fuel mileage.
.
Feed the animals better food some other place.
Good luck.

 

My scanner said both banks..?

 

Your correct, I wrote them down wrong.
Both with heater issues and both with Ox function issues.
Follow the harness back from both sides.
Somewhere where they come together back to the PCM area is a wire issue.
Good luck.

 

It's time to go full Bill Murry on that squirrel. Ford uses soy based wire insulation which attracts rodents. Those varmimts got me last year, in that same area you show in your pictures. Cost me $1700 in repairs.