Changed oil filter - now Reduced Engine Performance message

Changed the oil and filter yesterday FL2 SD4 HSE (OMG what a pfaff getting to the filter) so today have the Reduced Engine Performance message…. I didn’t take out the section of pipe by the filter, just pushed it out of the way to manoeuvre the filter in/out, so how probable is the message to do with maybe mucking up that pipe?
We are NOT having much luck with our Landrovers at the moment- Defender is off the road waiting for garage slot (3 more weeks)
Thanks