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My 2015 EcoDiesel def system freezes at least once each winter(North Dakota) and will put me in limp mode. Now about every 10 days it will throw a code "low reductant pressure".. Then in about 2 days it goes away on its own. Anybody have advice for me?
 

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Likely a problem with the def pump inside the def tank or restriction in pump inlet are some of the causes. Alfa obd with cheap obd adapter can perform these tests on the def system.
 

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2015 Outdoorsman EcoD CC w/6.4' 4X4
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There was an update a while back that disables the DEF system when the outside temp drops to something -20°F. Above that the line and tank heaters should keep the system functional.
 
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