As @Loz has advised, check both ends of the DPF, starting with the exhaust side. Crossed in the ether Loz, sorry.I know how it works. I asked where the sensor is.
Its under the air charge cooler,
see attached; (ps. there is lots of technical information available to VIP members in the downloads area)
Is your van still under warranty, as the 2 Charge cooler hoses are supposed to be replaced if they are removed and the red one is £160.I’m no car mechanic but I’m pretty handy. Is the differential pressure sensor difficult to replace? My symbol has been on for a while now and it’s starting to annoy me... it started intermittent and now has a permanent place near the Rev counter.