Mercedes High Exhaust Pressure But DPF Not Blocked??

Fault codes...
P04712A exhaust back pressure sensor has a malfunction. there is no signal change
P192700 plausibility error due to defective exhaust gas pressure line between the diesel particulate filter and the differential pressure sensor
incorrectly fitted pressure sensor and high pressure after the DPF

[@RogerM88]

Jimmy once again for the rescue. Many Dealerships wouldn't even touch that car, or would start replacing parts instead of diagnosing the problem.

[@jamesward5721]

Mates a main dealer merc mechanic - he was telling me about how many people come in going "I want a quality German car, not some French muck so I picked Mercedes.." Yeah... you got it sussed, Pal..."

[@-DC-]

GLB200 Built in Mexico with a Renault Engine, German as feck lol

[@eoghanhennessy443]

We had a customer bring there car back after we told them

[@hughmarcus1]

@@-DC-even worse are the ones who pay through the nose for their overpriced pickup, which is basically a Nissan with a Renault engine (a rubbish engine too). 😩

[@JoseSilveira-newhandleforYT]

Improperly serviced and unacceptable blunders from previous shops, along with, probably unneeded, parts canon... Good job getting it right, Jimmy!

[@davesmith5914]

As always, thank you for taking the time to make your videos.

[@ThePoacher19]

Hi jimmy I think the exhaust flap works with the back pressure between the dpf and catalyst so if there's a problem with the exhaust flap it could be stuck closed causing back pressure in the dpf and giving high readings ..just a thought 😊

[@slvs91]

My car has a similar issue , and also has an exhaust flap middle of the exhaust pipe , i also got a bit of soot on tailpipe and soot G going up very quickly

[@ritchieschofield1185]

Have this problem on vw tdi engines. Low pressure egr blocks up with adblue causing back pressure and setting p2002. I reckon the low pressure egr is the cause. Great detective work. Think you're on point with that. Excellent video

[@RideBikes_Walkplaces]

This video literally answered my question from the other day about what pressure the differential pressure shows. Nice one, buddy! Great video and diagnosis.

[@shaunblakemore7150]

Good job 👍

[@tomsurrey2252]

Good one, as per usual!!!

[@ORileysAutos]

Thanks again!

[@simonmiddleton4977]

Nice techie video 👍😃

[@malcolm6951]

Surprised it also doesn't have scorch marks from the 'parts' cannon being fired at is so often!!

[@renatairmarius123]

I have seen the same high presure after dpf on Rav 4 euro5 engine. Back box was causing 44 mbar presure after second cat, 90 mbar presure in front of dpf. I think back box was block some way. After hard drive by owner on motorway dpf light go away so didn't got a chance to remove back box an see way it's causing mbar presuure. Thanks for video.

[@neiltitmus9744]

Those hands and that leather lol

[@lifeRobrandom]

As far as I'm aware these are fitted with a back pressure flap that does keep some pressure in the exhaust system however the soot does indicate the DPF is damaged

[@paulnolan1352]

Cheers jimmy. So they’ve had a go at it and given the guy his Car back with all the Air system loose and badly refitted and not fixed either. Par for the course these days.

[@neildean7515]

Interesting video this jimmy and please let us know outcome. What was the age and milage on this BMW. Is it possible these DPFs are getting more restrictive in their designs to catch more pollution (therefore having higher values (and does Manufacturer data not give normal operating values!!! )These DPF issues are just putting people off buying diesel cars.. Maybe thats the idea

[@alouisschafer7212]

Once again previous shops messed about with parts cannon repairs without actual diagnosis... Some garages are just shocking cant even diagnose it. Its 2024 the car literally tells you whats wrong with it.

[@sanumotorswithcharlie]

Hi, I have a same problem too. Basically I upload one video months ago. Someone drilled couple of drill hole in a DPF because of the high Dpf Fisher but Dpf not blocked what I found there is a faulty mass airflow sensor because of that they change EGR maker two holes in Dpf and came to me I couldn’t find any problem with Dpf or other related. I’ll check any boost leaking even I can’t find any boost leaking. Finally I found faulty mass airflow sensor basically you someone remove that horse and leave it as it is, could be the problem, other thing we can’t find any faulty code for airflow sensor. And also, if sensor problem is effected to the gear shifting Good luck mate

[@royritchie4184]

Most newer mercedes have a exhaust damper shutoff flap near backbox so pressure is probably normal.

[@simonsherwood7169]

Be nice to know if that high pressure was normal on that ,bit of a unicorn car with that engine in

[@Phantom0309]

What does the DPF cleaner do the SCR catalysts?

[@krzysm5]

Jimmy, I have 14 530d my exhaust-gas pressure before dpf sits at 500 hpa no movement with rpm at all. Thanks

[@wackey3455]

hi jimmy just texting a long message and i clicked into a different video now i lost my text so i keep it quick i have vacuum gun the same as yours mine is stuck on vacuum the knob is stuck i cant twist it any ideas how to fix it, Done some googling not much help im afraid, Another very good video i would say he a happy camper drive in away

[@mikeday8999]

Hi jimmy. My exhaust pressure before dpf is 1220hPa on the live data. With exhaust back pressure 275hPa . Would this indicate a severe blocked dpf. I e already ordered the launch dpf cleaner to spray thought the front side of the dpf. ?

[@ORileysAutos]

Is it a Ford?

[@mikeday8999]

@@ORileysAutos it's a bmw 3 series. Live data shows soot level at 79%

[@tayfurkirici7832]

Jimmy I need your help with my glc

[@RideBikes_Walkplaces]

With the launch, how does the connection to the Internet work?

[@ORileysAutos]

Hotspot off my phone

[@PassioneParametri]

Ciao Jimmy potrebbe avere la farfalla bloccata di scarico dopo il pdf?

[@jimmyk2001]

Theres a lot of soot at the tailpipe, something has clearly caused it to dump all that unburnt fuel out of the exhaust, dont think this is the last we will see of this

[@slvs91]

What can cause soot on the tailpipe? I have a 2016 clio 1.5 dci no adblue with tailpipe clean, and then i have a megane 2020 1.5 dci with adblue and has soot on tailpipe and it also regenerates quite often ,about every 150 miles , injectors been checked and they all good , egr been cleaned too

[@rachidslimani5601]

Good job jimmy many dealerships wouldn’t even try to touch that car , i changed the DPF and i still have the fault code P246309 !! Any advice please ??🙏

[@davidoff59]

Another Jimmy video with that exact code kzbin.info/www/bejne/mKPLe2mkhtSKg9U

[@rachidslimani5601]

Thank you so much 🙏 i guess thqt was the problem from the beginning not the DPF because i had change it 5 days ago and still the same .. we don’t have good mechanics in france 🇫🇷, it’s already cost me a lot for this DPF , thanks again 🙏

[@Dadsworkshop1]

1st yeah

[@MummaBear]

Your Mercedes is a Renault 😅

[@jacekjs]

Tylko wycięcie i wyprogramowanie tego gówna może uratować sytuację

[@Tap_Lap]

Говори медленней или меньше. Субтитры за тобой не успевают.

[@ORileysAutos]

Sorry. I'm speaking as slow as I possibly can

[@Tap_Lap]

@@ORileysAutos 🥂👍

[@quadintheuk8870]

Do you come down to Kent Dartford area paddy ? 🙏🏻🙏🏻

[@JosipM333]

DPF DELITE

[@sanumotorswithcharlie]

Hi, I have a same problem too. Basically I upload one video months ago. Someone drilled couple of drill hole in a DPF because of the high Dpf Fisher but Dpf not blocked what I found there is a faulty mass airflow sensor because of that they change EGR maker two holes in Dpf and came to me I couldn’t find any problem with Dpf or other related. I’ll check any boost leaking even I can’t find any boost leaking. Finally I found faulty mass airflow sensor basically you someone remove that horse and leave it as it is, could be the problem, other thing we can’t find any faulty code for airflow sensor. And also, if sensor problem is effected to the gear shifting Good luck mate