I started my truck today (2006 Ram QC Sport Hemi) to go to work. The check gagues light came on and i noticed the oil pressure dropped to nothing, i shut the truck off and waited a few minutes and started it back up and everything was fine, drove it to work with no problems.
What would cause this? (could it be a bad sending unit?)
I changed the oil about two weeks ago and levels are fine, i cannot find any leakes or anything.

Probably the sending unit.

did it throw a code?

codes?? prolly sending unit

mines does the same.....only when its really cold outside though

It did not throw any codes, i guess i will cross my fingers and hope it dont happen again

Oil pressure sending unit. Been there, done that. Replace it.......

Agreed sending unit, seem to be culprit quite often.

Did this on my 03. I replaced the oil pressure sensor. Fixed the problem, u can try that, the part was cheap enough...