Odd Odors: When your filter is packed with debris, exhaust gasses have no place to go. This builds up and creates odd odors. Not only is this unpleasant to breathe, but it can also cause a fire hazard for you. Check Engine Light: When you have a clogged DPF filter, your dashboard might give you the first clue. Sensors in your truck can detect a First, I did the code to show the DPF filter % in the maintenance menu. I'm nearly certain it showed a percentage, like 76% or something the first time I looked at it. But now it has said 0% for 1500 or more miles. DEF gauge has gone down in that time so I'm sure it's doing it's regens just not showing properly on the new gauge. This document will guide the user through programming of the ECM to ensure the calibration correlates with the Diesel Particulate Filter (DPF) type. This document is only to be followed after diagnostics and/or Tech Services have determined a replacement DPF is needed. STEP 3: Clean all your aftertreatment components. This includes all the components that have been contaminated by the oil, fuel, and coolant. Clean exhaust system piping after the turbocharger to the inlet of the DOC filter. Clean all temperature sensors and pressure sensors (use electrical cleaner). The way that the car deals with soot is to collect it in the dpf and then to actively burn it off when the dpf is 45% full. This happens for me at about 200-300 miles. The car then artificially heats the exhaust up to 600C which gets the soot volume down pretty quickly. As soon as the engine idled back down the inlet was showing about 150 ppm and the outlet was showing about 10-15 ppm. I'm currently downloading dddl8.0 which will let me do the procedure to check them. We are sending the DPF filters off to get cleaned and when they get back I will hook back up to the truck and run the test. I believe that as the DPF is an automotive part designed to be attached to an exhaust system on a moving vehicle there would have been some impact testing done on it. It seems the technology is on one hand advanced, the other hand a primitive can. Some DPF's have failed early, been replaced, failed again. I suggest manufacturing defects. in this video I will share with you how to clean a DPF on a Mercedes/Dodge Sprinter Using Liquid Molly DPF Cleaner#DPF #SOOTLEVELTOOHIGHINDPF #SOOT #REGEN Particulate filter, est. blocking the reg. field Particle filter, req. of the reg. field Particle filter, kilometers from the last reg. Particulate filter, oil ash mass Particle filter, calculated soot mass Particle filter, measured soot mass Particle filter, time since the last regeneration 1. Check Engine Light The first, and most common sign of a bad DPF is a check engine light on your dashboard. The diesel particulate filter uses sensors to measure the pressure and temperature before and after the DPF filter. If the pressure is not correct, the engine control module will light up the check engine light on your dashboard. orOZV.