That was the exact wording of the fault code. I didn't get the second one, but if that's what preceded a warranty replacement engine and turbo, I'm curious to know which part failed on your engine. I've been in/around the car business my entire life, and oil pump failures are practically unheard of these days, much less on a brand-new engine.
In any case, I'm going to see the dealer tomorrow, since I've got a 500 mile round-trip coming up, and I'd like to avoid being stranded in Middle-of-Nowhere, Canada.
I had a failed crankshaft thrust bearing. Was having clutch problems when I got those error messages. They eventually found a thrust bearing in my oil pan along with a bucket full of metal flakes. Once that thrust bearing came off, the crankshaft was allowed to move back and forth inside the engine and ground the hell out of it. I think it was the metal flakes that damaged the oil pressure switch the first time in my case.
I also had a bad release bearing in my clutch and bad flywheel. It would have been interesting if there was a way to tell whether it was the bad clutch release bearing that caused the thrust bearing to fail or the other way around... (and before anyone says it - no, I never ride my clutch, not even a little bit).
Of the 2 subsequent times for the Oil Pressure Switch error, the first was a bad connector on the switch that they just fixed. The next time it was the sensor itself failed and got replaced.
It is possible that your error message is a symptom of another problem like my 1st one, but it is much more likely that it is just a failed sensor.
Again, good luck. Middle-of-nowhere Canada is not so fun a place to be stuck in the middle of winter.