cummins dpf differential pressure sensor reading

\u00a9 2023 wikiHow, Inc. All rights reserved. The ECM activates the fault codes based on the measured pressure difference across the DPF. You could also create a free QuickServe Online Account to access all Cummins manuals and wiring diagram for your engine. DPF Technical Information (I) engine management, it is nearly impossible to reach this temperature driving only for a short time. Disconnect the DPF pressure sensor connector. Since soot is abrasive, when it is mixed with oil, will cause premature wear to the engine components like the bearings. Some product links are affiliate links which means if you buy something we'll receive a small commission. I had a conditional pass but only aloud that one time, now need to fool it or return to stock. The whole system must work in close-knit harmony to deliver a reliable drive, time and again. The ECM constantly monitors the soot load of the DPF. This image is not<\/b> licensed under the Creative Commons license applied to text content and some other images posted to the wikiHow website. Following verification, proceed to the next steps. 4 0 obj '6 sMZiMDLWzRu7h55 SDhGCp]%iO '#Tgq&YK_/inyx*TEa"|E$8qRB B8~ Pc#V. For this investigation, an SKC pocket pump with integral pressure transducer (SKC Inc., Eighty-Four, PA) was used to collect the . Also Mike, I do not idle it very long at all . Replace the sensor. My understanding is that the 40420 does not have DPF delete capabilities. A diesel particulate filter (DPF) differential pressure sensor measures exhaust backpressure and signals when the power-train control module (PCM) should begin a regeneration process to clear the filter of diesel particulate matter (DPM), or soot. Some posts may contain affiliate links. You get a considerable pressure drop (offset) with a high flow in a restricted passage, while it tends towards zero with a smaller flow. Typically, the sensor is held in place with a Torx bolt and screws. Free shipping for many products! Sometimes the DPF is misdiagnosed as the problem and replaced only to quickly fail again because the sensor is the actual issue. If the sensor doesnt work properly, it could make your check engine light come on and cause the engine to hesitate or stumble. Let me know if you figured it out and it works, as I'll need to do emissions and if that works I won't have to swap out the exhaust. Check if the signal of the aftertreatment temperature sensors is within specifications. Typically, the engine operating conditions generate high temperatures and allow the passive regeneration of the DPF (self-cleaning). Last regen was about 900 kms ago. Monitor these parameters during a regen, and you should have these values; EGR differential pressure - less than 0.5" Hg - if higher, could be stuck open/leaking EGR valve EGR valve position - 0% - EGR valve must be closed. Black - Diesel DPF Particulate Filter . If you notice the numbers changing on the multimeter display, then the sensor has electrical resistance, meaning a current can pass through it and it will still work in your vehicle. Here ya go, using the search function for this thread,, I have the three 100 OHM sims used for the DPF; Used very little until I went with EFI live, a couple of years ago. The diesel fuel that normally escapes through the exhaust system during the regeneration cycle only partially burns. One line is attached before the DPF. a static regen after replacing the Dpf pressure sensor seemed to remove the Dpf warning light (it only came on after replacing the sensor). %PDF-1.5 They worked, but I had the CEL. Once the test is completed, record the results and follow the instructions on the diagnostic tool. Fired her up and instantly got totally different readings with no error codes. The range 0V0.2V is reserved for a diagnosis signal. The ECM activates the STOP ENGINE lamp immediately after a DPF differential pressure fault is determined to be active. One of the major complications these suffer from is the DPF - the Diesel Particulate Filter. Pressure Differential in DPF - 138 hPa. The ECM will set the fault if it detects that the aftertreatment diesel particulate filter is not present in the aftertreatment/exhaust system. Product Introduction. The Fora platform includes forum software by XenForo. work was supported by Cummins Inc. and would not have been possible without the . Spare Mini in my closet. Avoid using your vehicle if you dont have the sensor attached since it will cause unfiltered exhaust fumes to escape. x[G?Gr2FMOf$yD$Vd"k44vd/~o>{{O_/_|~xO}^w/U|?&yGY}\X7unrz3sTo&u|Ss5oqsCTmt^Z1%&M)foo7y'CenBQnZcu,f3Ouj`n814m7sya\9=b9sH3VD. wikiHow, Inc. is the copyright holder of this image under U.S. and international copyright laws. The voltage should read a value between the pressure values of both hoses. Adding another set of data-points from a 2007 3500 with recent recurring, key-cycle resettable LHM issues and a 2626-1 DTC as shown on my new MD802 scanner: Exhaust Back Pressure at idle - 1517 hPa. If they are blocked or need cleaning, remove the 3 plugs (underneath the mounting position of the sensor) to gain access to the drillings. EGR differential pressure faults: 1866, 2273, 2274. Where should you buy your replacement DPF sensor should it need to be replaced? I would think if it was not burnt and had good contacts it should be just fine but instead so many guys just change it out ! The ground and 5-volt reference should be identified first with their respective colored codes while backprobing any other signals that might need servicing. Otherwise, you can remove the sensor and test the electrical resistance between the ports. It should also carry a wide selection of sensors and have parts in stock. Once you remove the guts from the DPF, you will end up with a check engine light and the engine will eventually go into De-Rate. Other uncategorized cookies are those that are being analyzed and have not been classified into a category as yet. If the difference exceeds 24oC (43oF), replace the temperature sensor module assembly (the 3 temperature sensors are connected on the same CAN-BUS module and cannot be replaced separately, or be repaired. % Just in case anyone's searching for the values, MES is showing the following:-. The sensor performs the following simple mathematical function: DPF Pressure Difference = [DPF inlet pressure] [DPF Outlet pressure]. Entdecke Pai 050746OEM Exhaust Gas Differential Pressure Sensor Cummins in groer Auswahl Vergleichen Angebote und Preise Online kaufen bei eBay Kostenlose Lieferung fr viele Artikel! DPFs contain several hundred channels or cells per square inch (cpsi), with the most common being 200 cpsi. Warehouses - Fleet or Partner Pricing Available. If the aftertreatment DPF differential pressure sensor voltage readings are not within specification, then a malfunctioning aftertreatment DPF differential pressure sensor has been detected. This image is not<\/b> licensed under the Creative Commons license applied to text content and some other images posted to the wikiHow website. Replace the whole assembly). You must log in or register to reply here. This fault code sets when the DPF outlet pressure is greater than 30 kPa (4.2 psi) for more than 10 seconds. Simply the best offers on diagnostic tools for the US market. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. wikiHow, Inc. is the copyright holder of this image under U.S. and international copyright laws. The cost to replace a DPFE sensor and EGR valve range from $150 to $500. Run the engine on high idle without load (around 1600 rpm) for about 10 minutes to warm up the aftertreatment. 23.65. I suppose we could compare notes and perhaps get a baseline from newer vehicles but probably the best thing to do (if the vehicle is otherwise running normally) would to be to just look for any significant negative changes or trends over time. This DTC is a two trip fault. Last Updated: April 6, 2020 It's bad!!!!!! However, it is usually mounted on the aftertreatment assembly with a heat shield to protect it from heat or in the engine compartment again to protect it from the heat generated by the diesel emissions system. Basicly I'd have a V6 T1n . Typically, the ground port is the leftmost or rightmost prong but it may vary depending on the sensor you have. This article has been viewed 45,868 times. If the DPF has already been replaced during the repair (eg. This image is not<\/b> licensed under the Creative Commons license applied to text content and some other images posted to the wikiHow website. I would always suggest to use a tool such as Cummins Insite or TEXA (you can even rent one from Diesel Laptops). if so do you have any ideas as to what sensors can be manipulated manually in order to control (activate and deactivate/complete) a regen?