Code P2456 then P244A help needed

Hi all,

I need some guidance let me explain.

FR2 My 2011 ED4 GS 116k miles

Beginning of the week i got the "reduced engine performance" on the dash while driving on the M62 to home, as the motorway was busy i dropped from 6th doing 65ish to swap lanes when it clicked in ...i "limped home" not too much of a hardship except slow acceleration.

It was showing last regen 653 miles ago

I have a carsoft reader the LRv2 it read initially both codes ..i did a liitle research that evening and decided to clear the codes and see what happened ...not much was the answer codes cleared and dash back to normal but lasted about 10 miles then dash warning again ..code read was P2456 this time ... so I did some more research and decided to see if i could clear the code and then get it to do a regen incase that was the problem ...cutting a long story short i was able to after clearing codes a few times and feathering the revs just over 3000 in 4th gear to 70mph on a local motorway and ran it for 30 mins like that, then pulling off from the island as i left the motorway REP came back ..the odd thing is that now i seem to get the P244A code (DPF differential pressure too low Bank 1) alternating with the P2456 code (DPF differential pressure sensor - circuit intermittent/erratic) almost each time that the 'REP' reappears and i then clear it, they are no longer appearing together I'm only getting 1 fault code now.

I've also had a look at the lower rubber pipes that i read and saw could split they look & feel fine ... so now what would you suggest i do ?

Ideas and suggestions gratefully received ...my thoughts would be to check further the sensor the other pipes and connector ..does that seem right ?

I'm a bit on the clock as the MOT is due on 9th July and I'm assuming that REP is a fail so it needs sorting prior ?

many thanks

An update yesterday i managed to get a good inspection of the upper rubber hoses and found a small split in one of them by feeling with my bare fingers as the split was on the side facing away from my vantage point looking upwards from under and in the wheel arch.

I'd taken the wheel off and the wheel arch liner , so after around 5 hours and rather scraped knuckles plus the use of a hose clip opener with a long reach flexible wire to be able to get at the clips, good news today as took the hippo for a 30 mile motorway drive having cleared the code REP ..code P244A with my icarsoft first and no issues and even a regen occured so all seems good so far ..

I'm thinking that it will be sensible to hang onto the new sensor that i ordered from Rimmers and pehaps have it fitted ? when I'm having some major work done to the car like the 150,000 mile cambelt service ..any thoughts appreciated

Still going ok and fault codes not coming back?

Yes still going well and no codes have come back touch wood thanks ...I'm hanging on with the new sensor still