Truck started misfiring and code P0303 came up. Switched coil packs on 2 & 3. P0303 came back. Changed spark plugs. P0300,P0301,P0308,P2195 came up. Changed all 8 coil packs. Now I get P0053. Any one else have this fiasco?

 

P0053 is the HO2S Heater Resistance Bank 1 Sensor. I ended up having to replace the heater circuit board and the pre cat O2 sensor to fix it. I'd get a professional opinion though because I was just throwing money at it.

 

When I researched the heater sensor, it points to the 02 sensors. Any idea which one is causing the code, or should I replace both?

 

Success!!!!! I replaced the 02 sensor Bank 1 Position 1 which is passenger side on the pipe. Re-set the codes and nothing came back, also ran better than before.

 

I have a 2006 F150 Lariat 5.4L
I keep getting P0202 injector circuit open cylinder 2
Changed that fuel injector, but still getting the same code. It also appears to cause codes P0420 and P0430 to come up.
Anyone with the same problem or recommendation?