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2017 6.7
so over the weekend i filled my DEF (it was half before i filled up, not empty). yesterday on the way home an alert chime came up and said def
speed limit to 55 in 40 miles. i have 30 miles to get home so i got home and turned truck off and later went out to go somewhere and no warning light.
this am the alert came up again (DEF fault speed limited to 55 in 46 miles.).
what is this caused by and what to look for to correct?
yeah i gotta get into forscan to change that low tire warning-
hmmm now to search for this sensor location and such..... i know a month or 3 ago the warning came up for the 1st time but i was truly out of DEF then (almost out)
Per the Owners Manual, the message will be issued and the DEF light illuminated "when the DEF is contaminated, low or someone has tampered with the DEF system."
The "DEF Fault" warning doesn't come on for low DEF, it comes on because the ECM has triggered it due to some sensor in the system that is out of range.
There should be a code or codes posted related to the warning.
ok
i tried to use my phone but the adapter wasnt able to connect to my phone-
the alarm didnt come on today which is odd.......
i topped of at the station at the pump so i dont think it was contaminated......
i will hook up a scanner and see if it stored a code........ besides the one (P220E)for the nox sensor i havent figured out yet
The "DEF Fault" warning doesn't come on for low DEF, it comes on because the ECM has triggered it due to some sensor in the system that is out of range.
There should be a code or codes posted related to the warning.
Yeah, probably a NOx sensor. I think they are a backordered part these days
