99 front door lock
 

Hello,

My front passenger power door lock on my 99 Odyssey sometime works and sometime not, this is both via the power lock button on either driver or passenger door or via the remote fob. I think it's the actuator but not sure how to confirm this as I have also read that it could be something called a multiplex control module. What do you all think?
Also if it's the actuator does anyone know the correct part number as I have called 5 different Honda dealers and 2 gave me part number 72115-S84-A11 and 3 gave me part number 72115-S84-A01, via the diagrams they look the same but the price is not.

Thanks in advance.