Jon_67

Hi, Sorry I don't have the part number. Independent specialist fitted it and didn't include it on the receipt.

Yes, the exhaust pressure sensor was replaced as circled in the pic. Has been ok for over a year now.

Yes, I replaced the exhaust pressure sensor on top of the manifold and the car has been fine for the last 9 months. I have circled the sensor on the pic.

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Hopefully it was cleaned correctly. Had it done by fuel Injection Services in Burscough near Southport. They seem quite reputable having been established a long time. Used them before but i have thought about how clean the dpf actually is now after cleaning.. They have a specialised machine on site to do it and check the flow rate after. I suspect driving around for a couple of hundred miles since I got it back and 3 regens have removed some more from the dpf as the dpf pressures have dropped even more and the distance between regens have gone up from 62 for the first two afer cleaning to 10t miles for the third. That I can live with as the previous 62 mile intervals before and just after cleaning were ruining the fuel consumption. Thanks for your help.

The egr cooler was replaced 20k miles ago at 77k miles after P2002 code kept popping up .Seems ok at the moment as there is no return of the code.

No, haven't checked the two i have. The one one now was brand new. It reads zero when engine off and seems to have reasonably accurate readings as fat as o can see without properly testing it. Might put the old one back on and adapt it. It wasn't faulty when I took it off several months ago. It turned out to be a blocked egr cooler that was causing a previous P2002 code fault. Strangely it lasted 105 miles today before initiating a regen. The previous 2 regens after the dpf was removed and cleaned occurred after 62 miles. Same town driving habits, no long runs that would cause the extra miles between regens. Will see how it goes. Possibly the first 2 regens after cleaning removed some more soot or loosened cleaning deposits.

£2740 for a new dpf from Skoda and that doesn't include fitting. Think I'll pass on that one!

I experience no loss of power or poor running symptoms on mine. Runs like a new car even with the frequent regen issue. I think mine is the dfga with adblue. Luckily I've not had any issues with the adblue system yet. (Use Wynns adblue additive to try and help prevent crystallisation). Could replace the dpf with a second hand one for around £350 offf ebay but the pressure figures tend to suggest its reasonably ok. The car has currently done 31 miles since a regen and the dpf differential pressure at idle is 9 mbar. This seems fine and doesn't suggest a partially blocked dpf. Even if the capacity was reduced i would expect it to be higher if there was a ln issue.

I experience no loss of power or poor running symptoms on mine. Runs like a new car even with the frequent regen issue. I think mine is the dfga with adblue. Luckily I've not had any issues with the adblue system yet. (Use Wynns adblue additive to try and help prevent crystallisation). Could replace the dpt with a second hand one for around £350 offf ebay but the pressure figures tend to suggest its reasonably ok.

I have a 2019 Superb 2.0 tdi with 97k miles on the clock. When new the car carried out active regens every 250 miles or so. As the mileage has crept up it is now doing regens around the 62 mile mark. I have had the dpf removed and professionally cleaned. The ecu was reset after replacement to read zero ash etc. The regens are still taking place the the same 62 mile frequency. There are no fault codes and the car runs fine. The dpf pressure is around 8 mbar after a regen at idle and around 70 mbar at 2500 pm. These figures seen ok ish and were far higher before the dpf was washed out. The egr cooler and differential pressure were replaced last year for a different issue that was rectified. I am at a total loss what to try next as the dpf flow doesn't seem bad at all. No idea what's causing such frequent regens now. Thanks for any help in advance.

I have heard bypassing the egr can cause overheating of the valves etc on some vag diesel models. Plus stricter mot emission tests that may be brought in may cause a fail due to egr system delete.

Yes , it was the egr cooler small tubes blocked with soot and gunge. The garage replaced the egr cooler and egr valve with new parts and it has been fine for the last 20k miles. Total cost was £1110, but I think the egr valve was fine and replacement wasn't really needed.

Hi, My Autel maxicom generates this code and so does my Bluetooth obd dongle using the torque diagnostic app on my phone. Both say P0471 exhaust pressure sensor. Might have to book the car in with a dealer as i've ran out of ideas what to look into next.

Thanks for your help. Originally suspected an exhaust pressure sensor due to the code. I cannot find any information on this 2019 1.5 tsi having an exhaust pressure sensor nor locate it myself. I therfore tried a new map sensor which didnt sort the issue. I was then thinking the turbo boost sensor as this is the only other presssure sensor on the engine/ exhaust i have found. This is what has me stumped. Thanks.

Did you ever manage to replace it? I've got a P0471 code on the same engine and suspect this sensor.

My 23k mile, 2018, 1.5 tsi is throwing a P47100 code, exhaust pressure sensor A range/ performance every few days. Sometimes with a few different cylinder misfire codes. Most of the info I can find on this code relates to diesel models. I have checked the hoses and wiring and nothing seems immediately obvious. I have removed and cleaned the map sensor which seemed clean anyway. I don't think this petrol engine even has an exhaust pressure sensor like diesels. Has anyone else had this code on a petrol tsi.

Turned out to be soot partially blocking the egr cooler as suspected. It was replaced with a genuine new one and new egr valve at a cost of £1120. The code has not reappeared since. P2002 code has gone and also the odd appearance of the P20EE code that sometimes appeared at the same time. Will be using dpf cleaning additive every few months from now on to try and avoid this issue again.

These are the figures immediately after a regen. My local diesel specialist is pretty sure it's the egr cooler that is blocked with adblue crystallisation. He's replaced loads of them. It's being replaced next week if confirmed. The new modified egr coolers have larger oval holes to hopefully reduce the chance of blockage. Will add some Wynn's adblue additive as well as it's supposed to prevent crystallisation.

I've been struggling to diagnose the P2002 fault code that has appeared in the last few weeks every 100 miles or so. The dpf seems fine with 36g of ash, regens every 170 miles or so down to just over 5% soot. Differential pressure at idle after a regen is around 5m/bar. I have changed and adapted the G450 differential pressure sensor with no improvement. The car runs and drives perfectly with no smoke or soot in the exhaust. There is 77k miles on the clock and i am concerned the egr cooler may be partially blocked as this is apparently common. 3 bottles of dpf cleaner in the tank over the last few weeks hasn't helped. i've pulled the fault code activation data from my car. P2002. Freeze frame data Product name Value Unit Fault status 11101101 Fault priority 2 Fault frequency 1 Reset counter 255 Mileage 124891 Km Date 2023.09.26 Time 12:44:33 Engine speed 2393.00 1/min Normed load value 0.0 % Vehicle speed 63 km/h Coolant temperature 89 °C Intake air temperature 101 °C Ambient air pressure 1000 mbar Voltage terminal 30 14.720 V 2019 (K)/Skoda/Superb 2016 >/Engine Test Time: 2023-09-27 09:45:42 Report ID: MAXIA20230927094542 www.autel.com MaxiCOM MK808S Page 2 Dynamic environmental data 20 96 28 18 F7 00 3B 19 3E 05 42 16 EC 05 3F 16 ED 05 46 17 F7 1F D7 17 F4 1F FE 19 6A 02 1A Unlearning counter according OBD 40 Exhaust mass flow of low-pressure EGR, calculated 0.059 Differential pressure ratio, low-pressure EGR 134.6 kg/h Exh.recircul. 2, differential pres.sensor 1 bank 1, adap. value 134.3 hPa Exhaust recirculat.2, different.press.sens.1 bank 1, raw value 135.0 hPa Exh.recircul.valve 1 bank 1, pos.feedback - Act.value 99.50 % Exhaust recirc.valve 2 bank 1, posit.feedback - Act.value 99.98 % Exh. gas recirc. 2, diff. press. sensor 1 bank 1, dyn. value 134.5 Does anyone with more knowledge than me about the code see anything in the data that may suggest the cause of the issue. Thanks in advance.

That's the rear one then that's the nox sensor. It's attached to a connector and small electronics box on the wing just below the battery. Thanks.

Does anyone know which of these sensors is the nox bank one sensor 2. The front or the rear one?

Yes, that's possible.

I have just discovered using the torque app that the post scr nox sensor readings are a constant 2,000 ppm. I suspect that this sensor is faulty.