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#5 mph max speed service def system full

Also, tell us your issues with your current Def System. Does this mean a new motor and another system that's a disaster is coming? We guess we will have to just wait and see.

We've heard through the grapevine that the Cummins Def System will be gone in 2020.

Sad to say, these valves are prone to failure. To avoid that issue, these DEF systems are fitted with a valve that allows hot water to be pumped through the system to keep the DEF from freezing.

If the DEF freezes it may degrade, and potentially we could imagine expansion of liquid in a reservoir might cause physical damage.

This morning my DEF gauge was just over 1/4 tank, and all of the sudden I get a "Service DEF System See Dealer" and the CEL comes on.

#5 mph max speed service def system full

Full of water, diesel fuel or something else that’s not DEF 3. When they fail, sensors basically report to the Cummins ECM that the DEF tank is simultaneously: 1. No one including the engine or sensor manufacturers know why they are failing. The problem is that the sensors are having widespread failures.Am I the only one having this many problems User Interaction Count: 144. Check engine light comes on and a message displays check DEF system see dealer, then it will say 150 miles until speed limited to 5mph. I have a 2014 cummins with 42,000 miles on it, now in the shop for the 4th time for DEF related problems.Then one recommendation is to stop using the. If NOx levels remain too high at the outlet NOx sensor, the ECM may command additional EGR or additional DEF dosing to lower these levels.Cummins DEF System Problems: If you have been getting a bad millage on your motorhome or RV. NOTE: The ECM compares the inlet and outlet NOx sensor values to determine if the aftertreatment system is efficiently removing NOx. – DEF temperature must be above 27☏ (-3☌) – Both NOx sensors must be reading NOx levels – The SCR intake temperature must be at least 302☏ (150☌) and the SCR outlet temperature must be at least 392☏ (200☌) – DEF pressure must be sufficient for dosing – DEF quality must be verified by the quality sensor – DEF tank level must be above 6% filled with DEF – No current DTCs for the SCR or DEF system The following conditions are required for effective dosing to occur:.Dosing is not necessarily consistent the ECM commands dosing frequency and quantity based on several sensor inputs and engine operating conditions. When the ECM determines that DEF dosing should occur, it sends a PWM signal to energize the DEF dosing valve, spraying DEF into the decomposition tube. The DEF dosing valve is directly controlled by the ECM.The pump runs whether or not the dosing valve is spraying DEF.

The DEF pump runs continuously to maintain DEF dosing line pressure when the system is in the dosing state.}EF concentration can be tested using a refractometer that is calibrated for DEF.In addition, adding water to DEF will raise the freezing point. Chemicals introduced by adding unpurified water can also corrode or damage aftertreatment components or damage the DEF dosing valve. Adding water to DEF will change the DEF concentration, which will reduce SCR effectiveness.

In addition, DEF should not remain in the DEF tank of an unused vehicle for more than 6 months.

However, for each 9☏ (5☌) increment above this recommended temperature, shelf life is reduced by 6 months.

}EF may be stored in sealed containers away from direct sunlight in temperatures between 23☏ and 77☏ (-5☌ and 25☌) for up to 18 months.

Nissan recommends that you use a DEF that meets the International Organization for Standardization (ISO) 22241 specification.

How often it needs to be refilled is based on vehicle usage such as driving conditions, loads, speeds,.

The DEF tank holds 4.5 US gallons (17 L) of Diesel Exhaust Fluid (DEF) and needs to be refilled when the DEF level display indicates the DEF is low.