Twice in the last couple months, when I first start my Jeep, the oil pressure gauge will not move, and the yellow check engine light is on. Both times the engine ran less than 30 seconds before I shut it off. Both times, I immediately restarted with no issues.
I have a 06 LJ Rubicon, 4.0, auto, 78000 miles. Both times were extreme cold -5 and -22 (yes -22). I'm hoping it's just cold electronics/wiring/connection on the oil sending unit. Any ideas?
BTW I run synthetic oil.