Why do I get a bad Def message?
Why do I get a bad Def message?
Either way, if all is good now, you’re probably OK. 99% of the time the DEF is not bad. The message is based on NOx sensor readings. Most of the time its faulty NOx sensors. You can also get this message if the DEF tank runs dry (level sensor stops working)
When do I fill up my DEF tank?
Discussion in ‘ Ask An Owner Operator ‘ started by Lucar, Feb 18, 2015 . Have you ever… ? I filled up at the truck stop (big chain) full of fuel and filled up Def tank. 200 miles later “check engine light on” and poor quality DEF displayed on the screen.
When does DTC not match DEF tank range?
A detailed warning strategy is explained in SI Document 2410872. Exhaust Fluid Range X MI (KM): This message displays when the DEF tank has 1,000miles (1,609km) or less range remaining. A DTC will not be set. The DEF mileage countdown may not match the actual mileage the vehicle is traveling.
Where did poor quality Def Leave Me stranded?
I filled up at the truck stop (big chain) full of fuel and filled up Def tank. 200 miles later “check engine light on” and poor quality DEF displayed on the screen. I parked for the night and next morning “engine de-rated” was on my smartnav along with “limp home mode” which wouldn’t let me go over 3rd gear, so I couldn’t leave the truck stop.
What happens if DEF tank does not clear?
After a normal DEF tank fill, the DEF fluid level reading (on Tech 2) should have increased to 100%. If fluid was added and the level does not change, the DEF fluid may be frozen. The fluid will have to be thawed before completing the process in this PI. A reading of 100% does not indicate that the entire tank is thawed.
Either way, if all is good now, you’re probably OK. 99% of the time the DEF is not bad. The message is based on NOx sensor readings. Most of the time its faulty NOx sensors. You can also get this message if the DEF tank runs dry (level sensor stops working)
I filled up at the truck stop (big chain) full of fuel and filled up Def tank. 200 miles later “check engine light on” and poor quality DEF displayed on the screen. I parked for the night and next morning “engine de-rated” was on my smartnav along with “limp home mode” which wouldn’t let me go over 3rd gear, so I couldn’t leave the truck stop.
What does Def mean in Exhaust Fluid quality?
(Exhaust Fluid Quality Poor-see owner’s manual now) A DEF Quality message – Makes sure DEF fluid is lowering NOx emissions to a satisfactory level (usually has DTC). It is important to know the exact DIC message so correct diagnostics are completed. Please see SI documents (NNN) NNN-NNNN (NNN) NNN-NNNN and (NNN) NNN-NNNNfor clarification.
