Crank Pressure Sensor problem

[rachellem25]

Hi there, I have a 2015 Ecodiesel and it's been running great but it's had a check engine light on for a while that seemed related to a sensor. I took it to the dealer a couple of times and it would reset but come back on. The codes are PO4DB and PO51B "crank pressure sensor a circuit performance and disconnect". They have run all new wiring, verified the new crank sensor is working and connecting to the PCM and NO leaks from any part of the crank ventilation area. No fluid leaks of any kind on the truck. They said they can't figure why it keeps throwing that code. Any ideas? I want to sell the truck and ideally NOT with a check engine light on. The dealer said they can't figure it out.

 

[rachellem25]

End of story - went back to another dealer and after another 6 weeks they wanted to do an engine compression test and charge me $1000 if it was bad. 2 of the 3 guys that looked at the truck said it had a blown head gasket. No one would touch it at auction. Sold for $4800. What a POS! My $18-19K asset ended up worth $4800 to me. Thank god it's gone.