Yellow warning light flashes

Hi,

I was out doing a bit of mud pluging in my R50 series V6 Pathfinder, nothing too taxing, but noticed the yellow warning light on the dash flashing after I return home. It was most apparent when re-starting the vehicle. The light would flash 5 times, then go off.

Being a little alarmed at any warning light flashing at me, I contacted my local Nissan dealer who advised of a transmission problem. They re-set the computer, and advised I replace some component that controls the transmission.

My questions to you fellow Pathis owners is:

(1) Has this happened to you before? [the flashing warning lights];

(2) What is the name of the component I need to replace, that controls the transmission?

Would look forward to your replies. Thanks.