Feb 12, 2023 · Here is a more detailed list of the signs of a bad or failing DPFE sensor to look for: 1. When I searched for those 4 codes together, the results pointed towards the Back Pressure Sensor. Checked codes 2 for dpf and 1 for exhaust back pressure sensor pre dpf. Back pressure sensor 2. B19/9 (Temperature sensor upstream of DPF at idle = 496. I changed that sensor thinking that would solve the issue. Checked them online at: BMW Fault Code Lookup - BMWFaultCodes. Jun 18, 2023 · M. Nov 10, 2018 · I finally got around to replacing the differential exhaust pressure sensor and that did indeed clear my 4D03 code. We did not get chance to see what the old sensor was reading however we have managed to read the new sensor. Fault Explanation: Intelligent Battery Sensor (Layer DIBS1) Fault Code: 004D03. If you can please tell me what a good or faulty reading would be on those. Jan 11, 2020 · And then there is the issue of whether or not an already clogged dpf with high dpf pressure sensor readings can prevent an active regen from occurring. 11. DPF repairs fixed without the need of removal. Right now I suspect it to be a full dpf. If we could build a panel of switches or use a arduino to create multi level analog inputs to the EGT sensors then use a onboard air system and 2 regulators tied into the diff pressure sensor on either side, use the regulators to simulate " back pressure" and the right difference between the front side and back side in Jul 17, 2023 · Bypassing a DPF pressure sensor can be done by disconnecting the two silicone tubes from the sensor. Product Details. To use a BMW diagnostics term, the negative DP value seems plausible. Service Plan. Oct 1, 2021 · Dpf light on two weeks e90 2008 320d n47 engine. Mar 28, 2019 · GotBoost shows the process and results, how you test a DPF differential pressure sensor on a BMW 330d using Autologic Diagnostic tool and basic pressure gaug Pressure reading: A typical EPS scanner reading for pressure may be approx. The other concern is the 4530 code. The maximum permitted value on the 330d (for example) is 35mBar. Sep 22, 2021 · I have a problem with DPF regeneration. The code DOES NOT mean that the DPF needs to be replaced immediately. A diesel particulate filter pressure pipe is a strong metal tube that connects the diesel particulate filter to a DPF pressure sensor. 07831 103030. B28/8 (Pressure differential sensor (DPF)) at idle = 20. The exact mileage when the 452A code appears will vary and is not tied to a specific mileage on the odometer. We reported our findings back to the customer (who incidentally did do a lot of short trips in this car) and suggested we could either remove the DPF for manual cleaning, or suggested he try a long drive. You would normally measure dpf pressure in mb. e 85 Degrees - 95 Degrees (Coolant water temp) . Idle Speed 70. 4990 Exhaust gas pressure sensor before turbocharger, plausibility, exhaust gas pressure before turbocharger dynamically not plausible, May 19, 2020 · Now, the last time I had it checked by an indy (a month ago) got back with 3 faults namely: - 4C5E -> DPF. Diesel Help Australia can provide you with the correct tool for this test- DPF & Turbo Boost Test Kit. And the reading was static, so clearly not right. . Poor Engine Performance. A clogged DPF will generate another fault code and most likely with a reduced power warning. " QTY fp-number desc. It seems an active regen will not occur in this situation - I think this is what is meant by the sentence "Periodic regeneration can only be triggered via the ISTA service functions, if fault Oct 1, 2022 · I fixed both and readings seem normal now on pressure sensor. Hi All, The dreaded yellow/orange DPF light came on while driving home yesterday, probably as a result of 6 months worth of town driving, usually in traffic. May 9, 2018 · DPF Pressure Sensor. . Read on to learn whether it is a good idea to bypass a DPF pressure sensor. 132k miles. 3: with th May 16, 2020 · ISTA shows that fault about the Back Pressure Sensor so I want to fix that because it could well be that that's causing the rare drivetrain fault. I will gladly be corrected if anyone knows the PID to read this item. 88 hpa. The soot mass value. Jul 28, 2019 · Diagnosis: plastic tee failed; DP sensor is reading exhaust pressure between DPF an d SCR on the low side and atmos pressure on the high side. Did some diagnose test on ISTA+. This code commonly appears in engines equipped with variable nozzle turbocharger systems. Appreciate 0. I left the Vacuum distribution block in place. At that point they said the pressure was reading at 40mb but on the carly it was over 1000 mb. 563 for remainder of 3 min of logging. 38. I'm hoping that this will flush some of the soot out of my DPF which is reading 1. 4000 rpm - 510 mbar. The reading was as if my DPF was blocked even though it was not even connected. Sort by Oldest first. Jan 15, 2019 · 4D00 Exhaust back pressure sensor, signal, signal too high, diesel particulate filter differential pressure sensor too high, frequency 5 times. Fitted a new sensor and still the same reading. Naturally I get a fault code pop up but that doesn't matter for now. Then punching a little hole in said tube to lower the pressure reading. Diagnose it with ISTA and see where it takes you. Select your vehicle from the menu or enter your registration and it will display the right replacement diesel particulate sensor for you. 04 (Fahrenheit) I am going to compare these to my wife's car tonight. I found with my 635 it regen best at a steady 60 mph in a high gear with a light throttle. - drops to 0 within 10min of the regen cycle <- works as expected. Oct 28, 2015 · Man, just got done a 3 hr drive home and been thinking about this. I checked the readings and yes it was weird. May 5, 2019 · I noticed something when looking at the live ECU data on my car today, the exhaust back pressure under load at 4k revs is much greater than it is when you do the standard test with the car stationary. 32 posts · Joined 2022. No way that was real, so I assumed the part was shot, and I was correct. Hello, first post (and first BMW) so sorry if this topic gets done to death but. I too had my EGR Cooler and EGR replaced under the recall, but these codes were showing up before. Anywho, last night I filled up with diesel & took it for a 40 minute blast down the motorway/ring-road, keeping it above 2000 rpm. 004D00 - Exhaust back pressure sensor signal. Have had a leakdown test done and this did not show any leaks either. Here are tech's comments and parts used: "found leaking backpressure pipe between backpressure sensor and diesel particulate filter. For the next person changing theirs, I was able to do it with removing the engine cover/airbox. Dec 30, 2015 · I've been out this morning and unplugged the pressure sensor right on top of the dpf. S. It could also be a faulty sensor. Getting car fully terra cleaned Tuesday ie dpf clean and fuel system clean. Mine was checked recently and showed 2. and back to 14psi with engine off Differential Pressure Sensor Jun 5, 2016 · As long as your back pressure readings are ok, it can be reset in Ista. In fact, engine performance issues are the first sign that something is wrong with this sensor. All of our car parts are available to buy online, with free delivery when you spend over £20. Tried wynnes fluid in diesel no joy. If I drive from my home (at sea level) up into the mountains (hills really) to an altitude of only 300m my BP readings go up up up. If it fails or begins playing up, the ECM cannot Oct 23, 2013 · Took it to dealer and waited few days for the parts. Mar 1, 2024 · 78 posts · Joined 2023. Nov 2, 2016 · The temp. It should maintain the higher temp for approx 11miles. Fault Code: 004B81. This is the course I would follow if it were my job to Regen kicks-in promptly when soot mass reaches ~43g . A good one at idle would be 10mb or less bring revs up to about 2500rpm and less than 100mb flat out under load and 300mb max Jan 18, 2023 · 1000millibar = atomospheric pressure. 756 mbar. To confirm the differential sensor is operating correctly, compare pressure readings on the scan tool with a calibrated analogue pressure gauge. He then re-tested it (clearing the codes) and all was well no codes, but when he checked the idle status it was moving from 0 to 8000 and continually, when he rev'ed the car it Apr 19, 2016 · The code will trigger practically immediately after resetting making it difficult to reset. According to Carly. Sunday 7th May 2017. ie 10 mbar at idle 180 mbar full load. E46 320d 2001 saloon-current. So I checked the values with the fault code reader I have, and sitting at idle the differential pressure fluctuates typically between Mar 25, 2021 · It could be faulty and still working but not correctly. When i used ISTA and enabled force regeneration. 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. 300-350hPa that would require replacement of the DPF to rectify driveability concerns. There should be minimal back pressure pre dpf,usually measure mine with low pressure specialist guage. Hi, My E91 320d 2011 got the DPF warning light a couple of weeks ago, i did a search on the internet and came to the conclusion that i would try to clean my DPF. I have been trying to regenerate through ISTA+ without any luck. Perfectly fine. With Engine off. A damaged or blocked DPF pressure pipe could, in turn, cause the sensor to fail, giving incorrect readings and leading to further problems if The #DPFSensor is an important part of any exhaust system. It throws this code when readings from the sensor are nonsensical. My DPF is clean. 4BF4 Exhaust gas differential pressure sensor, diesel particulate filter, signal, pressure too high, frequency 94 times. 4D00 Exhaust Back-Pressure Sensor Bank 1. 14. 6-10 hPa at idle. Carried out an off the car clean and replaced gaskets and the DPF pressure sensor. Back pressure is pretty low and power is back. The engineer manually read the exhaust pressures and said it was nowhere Apr 22, 2015 · The fault code is indeed implausibility within the sensor reading. 1 13-62-7-812-806 pipe backpressure. Check the hose pipes of the sensor for damages and correct routing. I had the same issue (without glow plug faults). I have put an OBD reader on it but it is not showing a fault or code. smassey321. My plan is to fix the glow plugs and controller, change out the coolant temp sensor cos it's there, check that the coolant temps reach 86C as they should, and force a manual regeneration. So I have an intermittent code, anytime I do a relatively long drive over 2 hours, when I park the car and restart it, I get an emissions DTC code 4D03. I also noticed that when I first start the car. Oct 30, 2020 · This would make sense, as I expect pressure upline of DPF to be lower when EGR open, which seems to back up the readings. Removing the distro block and replacing all the vac lines might have been the smart Nov 5, 2021 · According to the dpf info in bimmerlink, none of the values ever change except for exhaust and coolant temperature and pressure. Dec 12, 2020 · The temps are very low and during a regen it should get much higher than what’s shown. Oh well, on the positive side, regens now appear to be working again. - 428B -> Charging pressure control, low-pressure stage, control deviation. Mar 12, 2023 · The codes I’m getting are 290B00, 290900, 28DE00, and 2AB600. Fault Explanation: Abgasrueckfuehrraten control, control deviation. #2. It was damaged, probably because of soot build up which I attempted to clean and it didnt not help. The Exhaust Back-pressure Sensor showing very high reading. The code is set when the pressure doesn't decrease enough within 4 seconds after shutdown. Currently KOEO the sensor is reading 300hpa (. - Oct 9, 2017 · Correction of Engine ECUs Cas and key fitted to your car (when a key set from a different car has been used) Digital Service Records rest and corrections in idrive screen on 2013 onwards cars. Follow the Pressure Lines. 5 psi + -. Fault code: (0x4AF6) Zero quantity adaptation injector cylinder 3. This pressure should not exceed 100hPa at Idle. Its very important that your car reaches the correct running temperature i. the soot measurement in part is the decider when a regen is carried out. This after 2-3 min. We'll talk more about the process of bypassing a DPF pressure sensor in the succeeding sections. May 22, 2017 · The remaining life of the DPF is a calculated value based on a number of parameters. sensors I am enquiring about are #17, 19 and 28, highlighted with a solid red square. The DPF is fine and regens as normal. Make sure the hose forms a tight seal on the port, or else you won’t be able to test the sensor accurately. Defective DPF pressure sensor: Contributes to the P2456 code. May 14, 2017 · At idle (700 rpm) the exhaust back pressure is 1967 mbar. Scott, what your asking about is in your title, the dpf sensor measures the increase/drop of pressure across the dpf,that measured pressure is what the system uses in part too decide how full off soot and ash your dpf is . minirock Discussion starter. I would try again clearing the fault code and monitor the exhaust temps and see if it increases substantially. -Abel. With a faulty sensor, the wrong information is sent back to Jan 15, 2019 · 4CF3 Exhaust back pressure signal, sensor, dynamically implausible, frequency one time. Replace that and the camshaft position sensor and then once they're good the particulate filter system will get a regen done and it will solve that. Map Sensor Reading at idle kpa play a critical role in modern engine management systems, providing valuable data for optimizing fuel efficiency, power output, and emissions control. G30 520d xdrive msport 2017-current. No drivability issues, or fuel economy loss. Soot level was at 0, I test drove truck and immediately the over limit service filter notice came up. The engineer dropped the exhaust and took a reading from the sensor with nothing attached, assuming it would be 0. Nov 23, 2019 · I had my DPF light come up on my dash and plugged in the OBD reader to bring up the following faults. Ash Mass is 0. Jun 27, 2016 · BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N57 / M57 Turbo Diesel Discussions - 335d > DPF Differential Pressure Sensor - Consensus Google Search Search Forums Jan 1, 2022 · The DPF sensor is easy to find, and you can use one of these methods: 1. at 2655 rpm, the exhaust back pressure is 2333 mbar. These will direct you to the sensor. Also get the DPF soot and ash levels checked. - E36 328is ~210-220whp: Lots of Mods. My 2008 (E70) X5 is throwing up a DPF warning every time after about 10 mins of either idling or driving. However, I did get regen cycle to complete while cruising on Jul 17, 2015 · I decided to check the Desired Exhaust pressure readings, and they are set correctly. This probably would happen sooner rather than later, as it is now going to be subjected to many short 10 mile journeys for the next few weeks. In my 2012 X5 35d, the 452A code started around 155k miles. Below I have plotted our DPF pressure sensor readings (in mbar) against some trusted maximum values taken from BMW service information that I use as a general guide on all DPF’s. Jan 28, 2020 · Reset DPF with ISTA-D. Selecting the right DPF is easy with our car parts finder tool. Dec 5, 2023 · They scanned and monitored the sensors to check first and said the temps weren't right and one of the exhaust sensors was reading all over the place so were 99% sure it was full of soot and ash. Fault Priority: 2. Coolant temp 90 Degrees. My scanner reads three temperatures under the Exhaust Gas Temperature (EGT) category (see attached screenshot): Bank 1, Sensor 1 (EGT11) Bank 1, Sensor 2 (EGT12) Bank 1, Sensor 3 (EGT13) My questions: Do sensors #19 (pre DOC), #17 (pre DPF) and #28 Nov 2, 2021 · Possibly the one to measure pressure across the dpf. Fault Frequency: 1. After that i took it to an Indy garage who was´nt able to register a new DPF. #3 · Jun 18, 2023. Fault code: (0x4BF4) Exhaust particulate filter differential pressure sensor, signal. When the DPFE sensor fails, the engine can’t run as it was designed to. Preface: I was having an issue with the pressure reading throwing a 4D00, 480A, and 481A code. There is a way around it, which basically involves replacing the tube that goes from the DPF to the DPF pressure sensor with a lenght of tube. Yesterday soot dropped from 37g at sea level to 14g at 6,400ft. In this #MastersofMotion video, our #Delphi expert demonstrates how to calibrate a DPF pressure se Nov 14, 2022 · During exhaust gas pressure sensor test the exhaust gas pressure sensor before diesel particular filter gives normal values (see screenshot with green bars) During a cold engine the exhaust counter pressure test gives negative values. 315 psi with cold exhaust engine off about 17. -I will try not to worry about it too much, unless warning flags up again. The pressure sensor on the DPF wants replacing. Mar 20, 2024 · 4. 00481A - Particulate filter system. Feb 26, 2015 · The lads at bwchiptune advised me to change one of the exhaust back pressure sensor as the dealer didn't have this part locally. I struggled to find the oil - ash numbers using FORSCAN or anything else. Nov 20, 2023 · A faulty MAP sensor, on the other hand, may provide inaccurate pressure readings, leading to improper fuel injection and engine performance issues. Exhaust back pressure before particulate filter - corrected = 599. Get BMW or a decent BMW indy to take a diagnostic reading of the DPF back-pressure whilst the engine is idling. The P0471 code triggers when the sensor signal falls outside the calibrated range. 38mBar. 2 psi). Apr 27, 2022 · Barometric Pressure 14. Jul 16, 2020 · Here mine are, in case anyone would like to weigh in on where these fall relative to a "normal" range: At idle (770 rpm): exhaust back pressure 1201 hPa (17 psi); DPF differential pressure 12 hPa (0. 2009 bmw x5 35d M57N2 engine. Exhaust back pressure before particulate filter - corrected = 591. Alas not. However the ECU still wouldn’t let us do a forced regen. He checked the errors codes and were 2 : 1. The MAP/MAF sensor is an essential part in delivering the correct fuel/ air mixture to the engine. 02 bar) the sensor is showing less than half atmos pressure. Here are some signs that indicate the DPF is not regenerating properly due to the DPF sensor failing: Poor engine performance Jul 23, 2016 · Ambient pressure drops as altitude rises. Then they said the exhaust back pressure sensor was faulty, as it was reading about 8bar. Almost 5 min from the start. I had a real boost guage and I compared it to carly and inpa and they were way off, my boost was only 20psi at times just 15psi max because map sensor was seei g 50, 60psi Aug 2, 2015 · Interestingly the car threw a code that related to the exhaust back pressure. You will find the sensor at the end of the pressure lines on most GL cars. The values below were my back pressure measurements, (well within spec) when I was showing that code at 138,000 miles. Jul 1, 2013 · I checked the codes when I got home and found the following: 3 Faults Found: 009300 - Diesel Particle Filter; Differential Pressure Sensor. 05°C. Fault code: (0x4D97) Exhaust pressure sensor upstream of the turbine, the range. To the south of Dublin are the Dublin/Wicklow mountains. Position the pump so you can easily see the pressure gauge and access the hand pump. Jan 15, 2017 · Ok so I have a full EGR and DPF delete, with Spartan tuner set at +125hp When I did it I moved the block plate and ebp sensor all the way up behind the turbo like others have done, completely removing all the pipe going to the old egr cooler. replaced pipe and reassembled car. Removed air box. The DPF differential pressure sensor plays an important role in keeping the DPF functioning properly. No more dpf faults and economy is much better All This was sorted by cutting open a hole into the dpf sensor hose and fooling the sensor that there is less pressure Dec 7, 2015 · Code 4D03. Check line and plug connections. Aug 27, 2016 · Just a quick update dpf has cleared up. In ISTA is than mentioned that if values below 0 are reported you should renew the exhaust gas pressure sensor Aug 16, 2015 · Second problem was my map sensor, sits on back left of intake manifd. Fault code: (0x4596) Smoothness regulator cylinder 3. DPF, he then cleaned it and put the dpf back onto the car. This indicates that you may have a split in the rubber hose going to sensor causing reading. The exact same reading, all the time. At 300m altitude ambient pressure drops to 977mbar. So I asked them to regen it agsin as they hadn't done it Having issues with DPF, getting message pop up with codes 00480A & 00481A. One more thing that points me to the MAF is that I logged the air mass reading whilst driving. Said they were confident it had been well and truly flushed. thanks. I bought new sensor, tried all like before and weird pressure is still 756mbar ( even when i unplug DPF hose ) I dont Dec 12, 2019 · The garage claimed that the back pressure was 2mb when I picked the car up. So the map went ahead and the car was then producing 200bhp post map. Car is doing the dpf regen perfectly now, Temps are going up to on the region of 600 to 640 C. P2454 - 000 - Short to GND - Intermittent. £81. This is for exhaust back pressure bank1. Feb 14, 2019 · E70 X5 DPF warning. After some time i got msg on diagnostic that exhaust backpressure sensor is faulty. Jun 23, 2021 · looking for help on how to replace dpf differential pressure sensor and hoses. 1 psi Exhaust Pressure Sensor 14. Jun 30, 2022 · The fault is entered if it is present for longer than the following period: 50 ms. Idle Speed Highest measured value: 6. this should give a indicator of DPF life (from other reading I have done) if that sensor was present. Have also had codes 41BB and 4D03 but having cleared these aren't coming back for now. Freeze Frame: Fault Status: 00100000. Turn the car around, go back down and the BP readings go back down. :-) So I have A N47, I had glowplugs faults and exhaust backpressure Feb 9, 2021 · This suggests the readings on pressure are normal, given idle and mild revs applied. Firstly add a bottle of dpf cleaner to the tank and go drive,and all the time keep clearing the codes. Soot level was still at 0, so I drove about 7 min up the freeway and got it up to 75 mph and 7 min back to shop. With engine idling. My sensor only has one pipe. #1 · Mar 1, 2024. E60 520d 2007 lci saloon-current. 1. Aug 22, 2020 · On our first test drive, the vehicle did have symptoms of a blocked DPF – sluggish performance and raised DPF differential pressure sensor readings. Mar 23, 2018 · 25 posts · Joined 2017. 0 hPa. 10. Sensor calibration plays a critical role in guaranteeing Feb 11, 2017. 1280 posts · Joined 2007. - 4CF3 -> Exhaust backpressure sensor, signal. Oct 5, 2023 · 25C800 Exhaust back pressure sensor: Sensor drift outside of tolerance Lets ignore the 244800 one that is basically a mileage counter 25C800 Exhaust back pressure sensor: Sensor drift outside of tolerance I believe that this relates to the sensor that connects to the output of the DPF directly. While unplugging, I watched the readings on Carly drop from over 1000hpa to 599hpa. Diesel exhaust fluid issues Order a DPF pressure sensor from Halfords. The images are for illustrative purposes only and the product may vary. The remaining DPF life is a calculated value based on a number of factors. Using the scan tool data, locate the differential pressure readings and record. Note: a “restricted DPF” during road test load conditions may indicate a reading of approx. They said the carly was inaccurate. 54g for the past several months, and the ash level has stayed at 0. Apr 8, 2017 · But you seem to have a few issues going on. 5 psi at idle about 26-30 psi at 2000rpm back to 16. DPF Differential Pressure reducing but still much to high to enable a Forced Regen. Feb 13, 2019 · The 452A code is an information code only for BMW service to advise the customer that the DPF is approaching it's calculated end of life and they should make an appointment for a $4800 DPF replacement. It looks like all these faults impact on the DPF and 9. Upon arriving back in Manchester and reading live figures the exhaust gas temperature was as the OP stated, -40. Connect a handheld vacuum pump to the sensor’s intake port. As you can seewhen looking at the back pressure result below it was non too promissing. #2 · Jun 24, 2021. The pressure lines are a quick and straightforward way to locate the sensor. The code went away, I reset dpf system, ran Regen. Genuine Exhaust Pressure Sensor 13 62 7 808 013. 9 mbar Feb 16, 2019 · The problem I'm running into now is exhaust back pressure sensor codes (among others): Code: Fault Code: 004A27. (and 4A2E glow plug 5 but not too worried about that Apr 29, 2023 · diesel particulate filter cleaning Mar 4, 2018 · On fitting, they said the dpf was too blocked to regen so they flushed it out. 004A34 - Glow plug cyclinder 4, control. 4BF4 Exhaust gas differential pressure sensor, diesel particulate filter, signal, pressure too high, frequency 94 Dec 16, 2015 · The sensor is still reading high but is no longer jumping from 0 to 66535. And replacing one can cost £1000 or more. 330D E91 N57 Engine 2012 (61), no dash lights but persistent codes coming back after multiple resets. At 2910 rpm: exhaust back pressure 1750 hPa (25 psi); DPF differential pressure 43 hPa (0. Tried to force regen the DPF after first clearing these faults with no luck. My problem seems to be that im getting to much pressure at the sensor now, or im somehow damaging the Jan 3, 2018 · Anyway I took it for a DPF cleaning place. I think the pressure sensors are okay but I’m happy to double check again. The fuel used and distance since last regeneration has also not changed at all. May 4, 2022 · diagnosing a diesel particulate filter differential pressure sensor1: check voltage supply at plug. 0208 561 1818. By sending the incorrect data to the ECM, generating more PM / carbon, stopping the DPF regeneration process, could result in a blocked DPF. 6 psi). Im beginning to wonder if the X4's programming for reading the EBP is correct. At 171k miles, code 4D4A was triggered and causes a warning about the DPF and a DPF symbol What to look out for in a failing DPF differential pressure sensor. The issue is exactly as read: exhaust back pressure sensor. It did a Regen a few days back. The warning essentially says that the particulate filter needs to be looked at and that it is possible to still drive but may experience loss of power. 00480A - Particulate filter system. I know some had 2. Green Flag attends a lot of cars that have broken down with DPF problems and they are caused by one primary factor: the DPF is clogged with soot because the driver has ignored the warning lamp. 2. Nov 22, 2014 · Idle max reading 65mbar 2000rpm max reading 150mbar 4000rpm (max stationary rpm) max reading 250mbar If it's within these tolerances the dpf is considered healthy. Apr 16, 2024 · To understand the P0471 trouble code, focus on the Exhaust Pressure Sensor Range/Performance issues it indicates. This sensor measures the inlet and outlet pressures of the DPF. Mileage: 100907 km. These are all DPF codes as to be expected with your symptoms, you DPF is probably full of soot. Clogged/damaged sensor tubes/hoses: Restrict the flow of exhaust gases and affect pressure readings. 5 and Soot Mass at the moment is 5. Tried a regen with snap on diagnostic no joy. The 3 readings above confirm the usual 480A & 481A DPF fault and Exhaust Back Pressure faults, sadly all too common. #1 · Mar 23, 2018 (Edited) Hi all, Over a period of time I have been getting the restricted performance warning, and each time the code is P244B fault code pointing to the DPF sensor. Nov 17, 2022 · What steps to follow if you see negative pressure numbers on your diesel particulate pressure sensor. Then they said the pressure sensor could be faulty so l got them to change it. 3 bar) now average atmospheric pressure is around 1020hpa (1. I'll check mine today and see what readings I get and report back Cheers Jun 18, 2023 · I don't want to/ can't spend $6k on a new DPF. 5 psi at idle for about 23 seconds then locked in at 16. what ive written is only part of Aug 29, 2014 · Not many drivers know what a Diesel Particulate Filter (DPF) is – until it costs them serious money. The soot mass level has stayed at 9. 4CF3 Exhaust back pressure signal, sensor, dynamically implausible, frequency one time. Add to Wishlist. E36 318i 1999 vert-current. BMW. Push the end of the pump’s hose onto the exposed sensor port. If the previous checks are OK: Replace exhaust gas pressure sensor upstream of diesel particulate filter. 2: check hoses to DPF from the sensor for leaks. 4667 – partikal filter system. You should leave the wire harness on the DPF sensor. 2000 rpm - 259 mbar. 1 min later. Fault Explanation: Exhaust back pressure sensor. - grows fairly fast at sea level <- subject of concern. May 8, 2018 · Took less than 10 minutes to finish, after run the "10016" code on coding II as ross-tech site say, the engine raise the rpm ( by itself ) to 1500rpm. - decreases (!) as altitude increases <- subject of concern. 9 mbar. Open/shorted circuits: Trigger the P2456 code. When temperature on inlet dpf arrived to almost 800°C, the rpm was lowered to 1000rpm for almost 3 minutes, then dropped to idle 750rpm. May 23, 2019 · Fault Code: 004D00 is actually for Exhaust back pressure sensor signal. I am currently waiting for a reply email from SCT to find out where the tuner reads the EBP from, whether its the DPF Pressure sensor or the actual EBP sensor in the engine bay. At which point, the car would be blowing pipes off. When the DPF differential pressure sensor stops signalling the PCM to regenerate, the DPF can become completely obstructed by contaminates and fail. That was also showing a reading. Maybe a week. This is a better but far from perfect reading - would this point to the sensor? Dec 20, 2020 · Step 2 - Confirm the back pressure physically. 9 grm soot, 61grm ash by Carly. Genuine Diesel Particulate Filter DPF Pressure Sensor 13 62 7 789 219. The differential pressure sensor was reading ~950mbar at any time; ignition on engine off, idle, cruising 2k rpm, and WOT. The above image is an oversimplified diagram in which the black circle represents the pressure sensing tube from the DPF that feeds the exhaust Jan 28, 2024 · Affect the proper functioning of the DPF system and the accuracy of the pressure sensor readings. jbisoxrgepvtvbwgxymq