Oil pressure sending unit location,2001 Odyssey

[aquariuscsm]

Friend of mine got her oil changed today. 2001 Odyssey. She showed me the invoice and it was stated the oil pressure sending unit is leaking. I want to check it out for her,where is it located on that engine?

 

[14Accent]

Slightly above the oil filter, covered with a rubber cap. Single wire going to it. They usually trail down the side of the block and over the oil filter/adapter.