I have been getting intermittent oil gauge faults after changing my oil from standard synthetic to motul 300v along with a P1539 code.

I don't know if the two are related but I have driven two thousand miles with the car without issue.

I was thinking it was a wiring issue as both sensors are on the passenger side of the engine but I checked and there do not appear to be any wires grounding out or loose connections.

Any other ideas?

 

I believe the oil gauge can go wonky once in a while. I fixed mine by disconnecting the battery for a day. Never had an issue for 2 years after that. However it also didn't throw a code.