Other possible causes can include a bad DPF pressure sensor, low urea level (tank is empty), problems with the DPF injection system and faulty exhaust pressure sensor. DPF service. Diesel cars and light trucks with DPF systems were introduced in 2009 and the first ones are now eight years old and have a corresponding number of miles on them. 108K views 6 years ago. In this video we look at a common diesel particulate filter related fault which is highlighting the failure of the differential pressure sensor hoses. The Ford model Unless it’s changed, you will have 2 pressure reference points. One before and one after. Those are the two stainless lines that go back to the differential pressure transmitter. Would be a black box (Bosch) with 2 rubber hoses that are attached to the low and high side stainless lines from your DPF Was mounted on the passenger side of my 68rfe Code P2452 may appear on some Ford vehicles. Image credit: Wikimedia. Code P2452 may appear on some Ford vehicles. On a 2008 Ford F-250 XL 6.4L, V8, for example, this DTC is described as, “The test fails when the diesel particulate filter pressure sensor signal value at idle is less than 0.15 kPa (0.022 psi). Likes: 1. Received 68 Likes on 31 Posts. Which one is the pressure sensor? The one that won't come out is the one aft of the DPF. I just bought a new one and used in the delete pipe. If you have Spartan or Black Max, they don't use the sensors. Reply Like. # 5. 10-13-2011, 04:48 AM. There seem to be two possibilities -. the vapouriser nozzle /glowplug, has blocked /failed. the hoses for the Pressure Differential switch are perforated /split. I checked for the pressure differential readings and they seemed to be either 0.0 or 0.1 at idle and as the revs rose gently. google search "6.7 Coffee Table Book". page 79 shows where they are along the frame/DPF. If i remember correctly Bank 1, Sensor 2 is between the DOC and SCR. it would be the second sensor from the front (front being where the down pipe flange is). 2012 F250 Lariat CCSB SRW: H&S XRT w/ Gearheads tunes, Edge CTS, 5" FLO PRO DP Back w/ Muffler. What does engine malfunction light mean on ford fiestaParking malfunction service aid required focus ford assist there problem well right park forum mk3 Engine ford malfunction max mondeo tdci dpf mk4Malfunction engine unit. Malfunction plugEngine malfunction message Engine fault service now ford transitFord focus 2013 engine malfunction issue. The DEF fluid pressure sensor is used to monitor the pressure of the DEF fluid and ensure that it is flowing properly. The DEF Quality sensor is used to monitor the quality of the DEF fluid and ensure that it is meeting the required specifications. All of these sensors are important components of the Cummins diesel engine emissions system. When the DPF was renewed the Differential Pressure should have been no more than 0.1 at Idle and maybe 2 or 3 when steady cruising at speed. If they were not then maybe the DPF was faulty or the Pressure Sensor was giving a false reading. I have heard stories of aftermarket Sensors giving false readings. oZ9tolQ.