2012 Dodge Journey 3.6 RT.
Check engine light came on setting a code of PO6DD. We took it to the mechanic and he changed the oil pressure switch. We have driven the car for 1 day and it is setting the same code again.....any ideas...I checked the switch to see if it had been replaced and the connections...all are good...

 

Did he use aftermarket or OEM switch? Take it back. I'm sure there is some kind of warranty on parts and workmanship.