Boots09

Hey all, So I have the above error code P223700 (Open circuit on bank 1 sensor 1) on my MKIII VRS 2.0TDI. Trying to find the part number for the sensor replacement. Short of going to a mechanic and asking him to get the part number from the faulty one is there any other way to find the number? My mechanic is away at the moment and if possible I would like to have the part to hand when he gets back to have it replaced. Thanks a lot

Thanks J.R. I've got the loan of a VCDS this morning and found a procedure online where step 1 was to adapt the sensor although and 2nd step to reset the learned values on the ECU. My vehicle doesn't seem to have the option for step 2, so I have just adapted the sensor and will see over the next few days if there is any difference. If anyone knows of another procedure or step I might have missed thanks in advance

Does anyone know if DPF differential sensor can be adapted some time after it has been changed or is this something that can only be done when the sensor is changed initially before the car is run?

At the moment here in Ireland as far as I know the DPF is not part of the NCT (our MOT check) but I am reluctant to start by removing it when I plan on keeping the car as there is mention of them being added to the checks who knows when or if it will happen. I am wondering if as a start point it might be worth replacing the differential sensor. I previously had the sensor changed when the mechanic noticed the inlet on the old sensor had broken off about 6 months ago while working on another job. Since this was done there has been no change to the behaviour noted in the earlier graphs (similar/same pressure readings) my only doubt as to why it might be worth trying again is that the mechanic didnt adapt the sensor when it was changed so I am wondering 2 things. Would it be worth trying to adapt the sensor now or is this a 1 time thing that is to be done before the car is started after changing or it is too late? Would I try replacing the sensor again and making sure it is adapted 1st this time or is that just a waste of time

Hey Guys, sorry to bring up an old thread but didn't want to duplicate another one for a very similar issue I am having at the moment. I too have an issue where my car (2014 Octavia Mk3) is performing very frequent regens and my fuel consumption is very high. As far as I can tell the regens are completing fully and the values drop to approx 5g for the measured values and less than 3g for the calculated. I then see the measured value increase very quickly and within about 20km of the previous regen usually another one kicks off. I also see my differential pressure seems very erratic from 20-30 @idle with spikes up to as high as 400Mpa. Could there be an issue with the differential sensor maybe? I also can see that when regen is running the input temp is higher than the output temp which I have seen suggested indicates there is nothing for the DPF to burn off but I'm not sure if this is the case. The car has about 175k miles on it and the oil ash residue is reported as 65.5g which I understand is getting towards the quoted end of life of the DPF but I am not getting any warning lights or no error codes logged in VCDS while this behavior is ongoing. If anyone has any ideas I would love to hear them or what I should be asking the mechanic to check or do. I have downloaded this data from the DPF app so i can add some more screenshots or data if there is something particular anyone would like to see. I have attached some plots of the behavior I have outlined above sorry i dont know how to add them into the correct part of the posts yet. Any questions please ask away, Thanks a lot