Got a letter in the mail some time ago about the NO2 sensor recall and software update, so I took mine in (2011 F350 SRW supercab long bed 6.7) b/c CEL came on. Some time ago right after I had filled up the DEF tank, I had a false warning that I only had 800 miles left prior to running out of DEF. I refilled again and it held about two capfuls.......no prob since then but odd. Anyway, took truck to dealer and they they took care of everything. I drove home and CEL came back on a few days later, took it back, now codes P249c and F show. I needed the truck for the weekend, so called and they said there are 4 exhaust sensors; one of them is causing the problem. The software doesnt tell them which of the 4, so I guess they have to replace one at a time.........and dont have any in stock.......so I took the truck home w me, to take it back next wk.
Anyone else w this experience of NO2 sensors? O/w love the truck. Strong motor.

 

Had the same problem after reprogramming the 12B33 on 5/18 due to a CEL, then CEL came on again 5/20.

Monday 5/21 they pulled code P249C and replaced EGT13, Mileage was still down to about 13.4, then yesterday 5/25 the CEL came on again going to work so I kept driving to the dealer to check it out this time they pulled code P249F and replaced EGT12 sensor.

Thanks to my dealer for taking me in without an appointment and working out the problems!
Now every thing seems to be running great mileage is back up to about 17 city.

Apparently this EGT12 was the culprit reading 268 Deg when the others were reading 600 Deg F It must have been dumping fuel in trying to bring this sensor to the right temperature.

Hope this helps!
Brian

 

anyone know if those EGT sensors are interchangable? Are they all the same part #?