Exhaust fluid system problem

hopperwagonbob · #1 (**permalink**) 07-12-2012, 02:42 AM

2500 miles and a warning came up saying "speed limited to 50 mph in 50 miles" dealer said probably a sensor. I'll know this AM. Taking it in. Anyone else have this?

Scooterfuzz · #2 (**permalink**) 07-12-2012, 04:03 AM

Not yet anyway. I'm at 3200 miles and the system says I have less than a half a tank. I don't want to void my warranty but I would really like to do the dpf delete. Darn regen kills my mpg's

bna612 · #3 (**permalink**) 07-12-2012, 04:32 AM

mine did the same time on my way home from the dealership with just a few miles on it. first taught was they didnt fill the tank up got home turned the truck off and started it again it showed full

hopperwagonbob · #4 (**permalink**) 07-12-2012, 06:21 AM

Took it in to dealer. They said there was some big updates to the ECM PCM TCM. Took about a half hour for the download. All seams ok. Feb. 2012 build date

desertnomad · #5 (**permalink**) 07-13-2012, 07:56 PM

I had the same happen at about 1800 miles just as I was pulling my fiver out of my driveway! I added 2 gal of DEF and after 5 miles the warning light went out. So far 800 miles later all is ok.

Sledguy · #6 (**permalink**) 07-16-2012, 05:07 PM

I had the same thing with 2700km. They performed a manual regen and aplied tsb for code p204f. (reprogrammed pcm, tcm, nox, and gpcm). So far so good. So how come they can do manual regens and we cant.

**Rob** · #7 (**permalink**) 07-16-2012, 05:10 PM

You should all get about 5200 miles before a warning light comes on with the 800 mile range left. 6000 miles total based on normal driving conditions. DON'T RUN IT EMPTY.... unless you have access to more DEF. once it runs out, the truck will go to idle only, and if shut down it wont restart until refilled. 5 gallon capacity in the tank.