yep it is possible. if the maf sensor is so clogged up that it can not read near accurately then it can cause a fault light to illuminate.
cleaning it has been covered a number of times on here, a quick search should bring up plenty finds but to save you time its roughly this: (from memory)
remove plug from MAF sensor
remove intake pipe from both sides of sensor housing
remove two torx screws (star shaped) from the top, sensor will then pull out CAREFULLY.
use electrical contact cleaner and a cotton swap to clean the metal plates of sensor, apply minimal pressure as it is very sensitive!
soak the housing in hot soapy water
allow to dry
refit in reverse order
it may benefit you to disconnect the car battery for half an hour to allow it to reset the ECU.
cleaning the MAF does not always work tho and is at your own risk.
Do you have other signs of a faulty maf sensor such as no power over a certain rev, verry sluggish, struggling to idle?
Any driving issues at all?
also, this thread really would have been better in the 147/156 area