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• 2015 5500 dodge 6.7 sayinsayin service def system code#

The PCM closes injector and returns purge valve to forward position. The PCM then opens injector to allow gas to enter reductant pressure line, which in turn allows the pump to purge all remaining DEF from the system and return it to reductant tank. When the vehicle is shut down, PCM closes injector and actuates reductant purge valve, causing the pump to reverse flow and bleed down pressure on reductant pressure line. The system is then primed and injector provides DEF to the SCR catalyst as determined by PCM. When all air is purged, injector closes and pump builds pressure to 73 psi. When PCM requests reductant injection, the reductant injector opens and the pump operates, filling reductant pressure line and injector and purging air from the system. The reductant pressure sensor provides feedback to Powertrain Control Module (PCM), which regulates system pressure by controlling pump speed using pulse width modulation. The DEF is kept in a separate storage tank and usually needs to be refilled at least one-two times between oil changes.The reductant pump assembly contains a diaphragm pressure pump, a pressure sensor, a purge valve, an outlet filter and an internal heating element. This occurs when DEF (diesel exhaust fluid) is injected into the SCR which in turn causes a reduction reaction to the harmful elements. The basic function of the SCR is to convert nitrous oxides into harmless water. By 2013, the SCR was installed on all Cummins 6.7L vehicles. The SCR was first introduced to the Cummins 2011 Cab & Chassis models. The purpose of this component is to capture and store harmful emissions during time when the engine is running lean, and then to convert the harmful emissions into harmless gasses such as oxygen during times that the engine is running richer. After 2013 all Cummins 6.7L vehicles are equipped with a NAC.

When a NOX sensor fails, the monitoring system sees NOX emissions out of spec, and tries to correct the problem by adjusting the amount of DEF being. Much more common is failure of a NOX sensor. The NOx catalyst can be found on vehicles with the Cummins 6.7L engines prior to 2013 model years with the exception of the 20 Cab & Chassis models. Sometimes, again based on Ford/GM experience since 2011, Service DEF System messages don't actually mean there is something wrong with the DEF system. This soot buildup will typically require the DPF system to be removed from the vehicle and cleaned. Whether you’re a do-it-yourselfer or trained auto tech, you’ll appreciate the convenience of home or business delivery, or picking up your Diesel Particulate Filter product at the nearest Advance Auto Parts location. Over time, small elements of DPF ash or soot may accumulate within the Cummins DPF (diesel particulate filter) even though the proper regens or regenerations have taken place. The ratings and reviews for these Dodge Diesel Particulate Filter aftermarket parts really help you make the right decision. This is accomplished by fuel being injected into the DPF which increases the temperature to over 950 degrees F. DPF regeneration, simply put, is when extreme heat is added to the DPF Filter and diesel particulate matter is incinerated. These diesel particulates also referred to as DPF ash or soot accumulates inside the DPF filter until a regen is triggered. The DPF is responsible for filtering or “Trapping” diesel particulates that would otherwise exit through the Cummins exhaust system. Upon driving until the countdown reaches zero, the customer will hear a chime and. The customer will hear a chime and get an EVIC message reading 'Speed Limited to 5 mph in XXX MILES See Dealer'.

2015 5500 dodge 6.7 sayinsayin service def system code#

The second warning level will occur if the customer continues to drive and the code has not cleared. The precious metals create a reaction in the exhaust gasses which effectively turns carbon monoxide and other harmful elements in water. message reading 'Service DEF System See Dealer. About 5-6 weeks ago I was towing home from Disney, Ok and my truck said Service. It is my DD and I tow a 5th wheel toyhauler that weighs just under 15k loaded. I've owned it since December and 90k miles. These are manufactured with elements of precious metals in the substrate which include Platinum and Palladium. AGAIN Hi All, I'm having some issues with my ' Megacab. This component on the Cummins DPF system is basically a catalytic converter for a diesel engine. These newer exhaust systems which are commonly called ”DPF Systems”, actually have several components that work together. The newer systems on the Cummins 6.7L models are a bit more complex. The emission device on the earlier 5.9L models consisted of a single catalytic converter. In addition to more horsepower, one of big differences was revamping the entire exhaust and emission system to more effectively eliminate harmful pollutants. CUMMINS 6.7L DPF SYSTEMS- What we purchase and recycle EXPLAINEDĬummins introduced the 6.7L diesel engine halfway through the calendar year of 2007.