\u00a9 2023 wikiHow, Inc. All rights reserved. To find a high-quality new DPF replacement pressure sensor, its important to purchase the right part. During engine testing, the Cummins engineers have determined the allowed pressure difference levels on the DPF. Since soot is abrasive, when it is mixed with oil, will cause premature wear to the engine components like the bearings. I'm trying to have a vehicle that I can trust at long distances from my home . 2008 Mega Cab White 6.7L H&S Minmax w/deletes, 2015 stock 20" rims with 285/60/20 Mich defenders, level kit. Variation: If you have trouble keeping the probes against the pins, opt to use ones that have alligator clips and attach them to the pins so you dont have to hold them in place. work was supported by Cummins Inc. and would not have been possible without the . Necessary cookies are absolutely essential for the website to function properly. underneath/Bed extender/50-gal diesel tank/ 12K Winch/Nerf bars/ Etc. For a better experience, please enable JavaScript in your browser before proceeding. Check if the signal of the aftertreatment temperature sensors is within specifications. my thoughts like i said were to manipulate the DPF sensor in a way that it would send the appropriate signals to the ECM telling that it is in If you still cant find the pressure sensor in your vehicle, take your vehicle to a mechanic since the sensor may be built into the pipes. One sensor that keeps an Eagle Eye on the condition of the DPF is the Differential Pressure Sensor.How can we test this sensor and how can we be sure that the ECU is processing what it sees? When this sensor is not working properly it compromises the regeneration process and will eventually lead to diesel emissions system failure. C - P244B CausedFrom a Full DPF. 8C3A9G824AB 137423 C17G2807851 8C3Z9J460D 0741584Z03 1778137 . '6 sMZiMDLWzRu7h55 SDhGCp]%iO '#Tgq&YK_/inyx*TEa"|E$8qRB B8~ Pc#V. The signal output is described by a linear function: U = (0.82 x p +10) x 0.05 [V/kPa] Where: U = signal output voltage [V] DC p = differential pressure [kPa] Connect your preferred diagnostic tool, read and list all other active fault codes OR inactive fault codes with more than one counts in the last 25 operating hours. These cookies will be stored in your browser only with your consent. Diesel emissions systems rely on sensors to send signals to control modules when maintenance on the aftertreatment systems is required or when something is no longer functioning properly and requires a repair. Your multimeter may also be labeled with the letter V with 3 horizontal lines on top of it instead of DCV. Replace the whole assembly). ya EGR has A LOT of sensors/modules tied into it. i pretty much gave up on figuring out a way to simulate EGR readings which is why i left mine in tact just plug it all in for testing. The differential pressure sensor measures the pressure drop between two points in the flow pattern and is used at two different points in the exhaust manifold. The exact location of the DPS varies by vehicle model type such as medium duty, pickup, or van. Excessive ash in the DPF, causes blockages. Category: Exhaust Pressure Sensor / DPF Sensor. If you want to check the sensor while its still attached to your vehicle, use a multimeter and vacuum pump to test the pressure and voltage readings. It's going to want to close turbo down and open EGR valve until it see pressure Take the butterfly out of the throttle and leave EGR in place but blocked off with plates Then setup another resistant mosfet to simulate a pressure in the EGR to keep that readiness monitor happy. Engine and DPF Sensor Signal Based Methods 13 2.3.1. New Cummins DPF Differential Pressure Sensor 2010-16 PN 2871960 904-7127 w/Tube. The sensor monitors and measures the pressure with the EGR valve. We use cookies to make wikiHow great. Engine problems: If the engine has malfunctioned, it is possible that excessive soot is created, causing the DPF to get blocked. The cookie is set by the GDPR Cookie Consent plugin and is used to store whether or not user has consented to the use of cookies. Damaged DPF. The operation of the Exhaust Gas Recirculation (EGR) valve will be disabled. The Engine Control Module (ECM) uses the Exhaust Pressure Sensor to monitor the pressure differential through the aftertreatment Diesel Particulate Filter. It's important to rev the engine and check for voltage changes before testing anything else. The ground and signal ports are usually located on opposite sides from one another, so youll leave the middle port empty. 2022/3500/6.7/68RFE/Crew C/SB/SRW/TRXOFFROAD Decals/Tradesman/4X4/FRTRPLBPR/TOOLBOX/RCHTRK/ 275 MTR's KEVLAR/ 2" leveling kit Front/1" rear/Metal Grid Protec. Appreciate 0 Quote . You can buy multimeters online or from your local hardware store. A differential pressure sensor is an electronic sensor that measures back pressure before and after the DPF and determines the level of soot contained within the DPF. References. Below we've included a step-by-step guide to help: If you see that your voltage is off or there are huge differences in pressure values, then it could be time for a new DPF sensor. If the sensor ports are clogged, clean them with brake cleaner or equivalent solvent. I have a spare sensor I can send to you, you could install it as a test to eliminate your "new" one..? Once you are done, connect all components, validate your repair and proceed to the next steps below. Assuming that you validated your repair after each step that youpreviously followed (run engine, test drive etc): If fault code 1922 is still active OR inactive with more than one counts in the last 25 operating hours, the DPF is fully clogged. If not, check the wiring harness for continuity and correct resistance (less than 10 Ohms). Will be replacing the Y-cable tomorrow, then re-testing. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. CUMMINS DPF Differential Pressure Sensor 287196. What is a DPF differential pressure sensor? They worked, but I had the CEL. Fwiw I am getting 2500hpa back press and 90hpa dpf diff cruising on level ground. The voltage should read a value between the pressure values of both hoses. Simply the best offers on diagnostic tools for the US market. Exhaust Pressure Sensor 3921027401; $159.59. Send email to us. <> wikiHow, Inc. is the copyright holder of this image under U.S. and international copyright laws. O'Rileys Autos - Mobile Mechanic & DPF Cleaning 16.1K subscribers Subscribe 58K views 8 months ago diagnosing a diesel particulate filter differential pressure sensor 1: check voltage. The DPF differential pressure sensor plays an important role in keeping the DPF functioning properly. Poor engine performance; Poor . JavaScript is disabled. I'd strongly suggest getting either an "OBDLink" cable or Bluetooth device rather than trying to use an ELM327 device to connect Multiecuscan to your van, MES seems to have no end of issues with the cheap ELM units. If you are wanting to be a little more accurate you can use an exhaust backpressure gauge that measures between 0-15 PSI. What to Look For in a DPF Differential Pressure Sensor That is Failing . An exhaust pressure sensor, also known as an EBP or DPF sensor, measures differences between your vehicle's exhaust before and after it passes through a filter. If all's well on this end then it should show 12 volts or more when reading from the devices scale! {"smallUrl":"https:\/\/www.wikihow.com\/images\/thumb\/9\/90\/Test-an-Exhaust-Pressure-Sensor-Step-1.jpg\/v4-460px-Test-an-Exhaust-Pressure-Sensor-Step-1.jpg","bigUrl":"\/images\/thumb\/9\/90\/Test-an-Exhaust-Pressure-Sensor-Step-1.jpg\/aid11734221-v4-728px-Test-an-Exhaust-Pressure-Sensor-Step-1.jpg","smallWidth":460,"smallHeight":345,"bigWidth":728,"bigHeight":546,"licensing":"