2017 Ecoboost with P051B check engine light

[Boostedbus]

This is a pic of the sensor that’s throwing the code.

 

[Andrew Widen]

I'm having the same issue, the CEL is lit, the Oil Pressure in the gauge cluster states oil pressure is OK. Anyone have the part number for crankcase pressure sensor?

 

[chuck s]

Regarding overfilling of crankcase oil: fuel dilution of crankcase oil can happen with the EcoBoost engines. Recheck the oil level after the engine heat has had a chance to purge the gasoline.

-- Chuck

 

[Andrew Widen]

Here was the fix; Ford #FL3Z-6748-A. The sensor was bad, all the wiring and circuits checked out.

 

[gkretro]

I guess this a thing with this engine. I just bought a 2017 XLT from a Ford dealer, drove about 250 miles over the weekend, and the CEL came on yesterday with this code. The car still has 5K miles left on the power train warranty so if it happens again I’ll take it to my dealer.

 

[Geargambler]

Just want to say that this thread was really helpful to me, so thank you to everyone who posted! The CEL code P051B popped up multiple times even after clearing it. The replacement part is FL3Z-6758-A. The original part is FL3E-6758-CC, which the dealer could not look up. No codes since replaced. The remove and replace took less than 5 minutes.