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crankcase pressure sensor

20K views 69 replies 11 participants last post by  3.5ecomike  
#1 ·
I have a 2019 3.5 EcoBoost starting doing some mods after I pulled exh manifolds off to bolt up full race manifolds I pulled my wires out the crankcase pressure sensor on drivers side that goes from intercooler tube to valve cover it has a yellow, yellow green ,and a green brown can someone please tell me when you look at yours plugged in from the firewall out which colors go where I tried many different set up and replaced the sensor and tube and keep throwing a p051D-00 code I thought i had it right we erase the code drive home fine shut off truck start it back up and the engine light comes back on. thanks for info I'm new to this site but not new to the EcoBoost.
 
#2 ·
Here is off of a 2018 wiring diagram. Hope that helps!
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#4 ·
You ripped the three wires out of the crankcase pressure sensor? And want to replace them? But you already replaced the sensor too? I’m confused, sorry.
 
#8 ·
If it was easy you wouldn’t be here asking us for help, would you?
I have never seen three wires slip out of a connector. They are usually well pinned in.
Did your mechanic buddy suggest going to a parts store to see the wire sequence on a new sensor?
Take a picture of your sensor, clearly indicate which connector your asking about and I’ll go out to my truck and see if I can help you out.
 
#27 ·
#32 ·
I think its my wires going into pigtal I see lots of this sensor, I cant believe it would be bad again, but maybe it was not to begin with .. I yanked those small wires out a couple of times, they were bent over pretty good when I got the truck, there is not much wire to cut and solder back together or I guess I could add some wire in the cut.. anybody have some advise on that issue thanks ..