Hi I hope the picture below helps, I can help you further with this as I have found that mine was a 5p blocking my pump fan at the bottom behind the lower front cover, I can talk you through how to do that, but it does involve unplugging the washer firstly, then using a sponge & bucket to remove as much water from the drum as possible & then tipping back machine & propping it up under with a strong solid object that can hold its weight for a while, but then slide a good solid tray under to catch the excess water & an old towel or rags near by for any splashes, then by undoing the front lower flap with a butter knife there are lugs about an inch in from each end, gently pop them down carefully & remove white cover, then by twisting the grey circle cap that is at the front of the pump fan, this can be hard to turn, but follow the arrows, I have had to turn mine using pliers before, turn this slowly because water will come out & it will be fast if you turn it to quickly soaking the floor, once removed look & see what is obstructing the pump fan blades, maybe a hair clip or a coin or limescale & hair etc, give it a good sweep around & rotate the fan blades & inspect closely with a torch to see any minor scratches or damage the fan, this may indicate the item is blocking something or if it's gone the other side of the fan or not, once this has been cleared & rotates & the filter if there is one has been cleaned & replaced back then reassemble it all together & then resit the machine, please leave & allow it to settle for a few mins to be sure that there is no leaks from the area you opened (sometimes a few drops as the water tipped backed wards will rush forwards & then it will be resealed, after a 5-10 min wait plug the washer back in, set it to the pump out & spin programme & this should clear the problem, it did with mine last summer... I hope this solves the problem..
I did add a picture from their website depicting what the error code is trying to indicate to you, but you probably have already looked for this already, Hope this helps....