I scanned me truck today and it came up with code C6200, I have a 2001 F-150 2WD with a 4.6L. It is a chassis code and most the sites I go to don't go above a C2000 code. Sometimes the airbag light blinks.

I also got code P1311, that is Lack of upstream heated oxygen sensor switch-sensor indicates lean-bank #1
Does that mean I have a missing cylinder on bank 1? Which side is that?

Thanks.

 

Bank 1 is the passenger side.
Sounds like the sonsor could be bad. Usually P0171 and P0174 are for lean conditions.

I can't help you on the C6200, sorry. You can try this link. http://www.obdii.com/codes_request.asp

 

That's not a valid Ford chassis code. Most likely the result of using a tuner to pull the codes instead of a dedicated scan tool. If this is the case, contact the tech support people for your tuner module. In the meantime, I would ignore it as invalid and likely the result of a testing error.

The flashing airbag light is a two digit code. Count the flashes and see what the Lamp Fault Code (LFC) is.

P1311 is not a valid code. I assume you meant P1131 which usually points to a worn out/ lazy upstream sensor on the passenger side. This one is a fairly reliable indicator that the sensor is in need of replacement.

Steve