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Code: P2C90 - Crankcase Ventilation System - Hose 'A' Disconnected on 2025 Explorer ST with Fen Fab V2 Intake

NAiLs

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2025 Explorer ST
#21
I talked to Brett from FenFab. The 3D printed tee is for the evap system to bring the vapors back into the intake instead of atmosphere. Brett explained the P2C90 is due to the lower turbo intake hose up to the driver side valve cover. Check that the 90° barbed fitting is tight and the hose is snug.
Thanks for reaching out to Brett for us!

The way the code reads (as seen in OP), it made me check exactly this connection. I found my lower hose to be perfectly tight on both ends. I did not zip tie either end, because they're really tight and damn near impossible to yank off. (Shouldn't have to zip tie barbed connections, anyway) I did take the one off the valve cover side once, because I didn't like how I routed it first, and it was a bitch to take off... and still is super tight after reinstalling. The barbed fitting is tight into the intake tube, too... I can't remember how many turns I got after hand tight, but it definitely was not coming off by hand.

I don't like the 3D printed part regardless of its purpose. If it wasn't printed with ABS or better, it doesn't belong under the hood of a vehicle, and the way it was designed and printed, it's asking to fail easily.


@DaGooch, I'll check this evening to make sure there is no crap inside of that 3D printed part, if I can... I can't remember if I looked through it or not when I installed.


I've been out of town, so I haven't driven (don't much, anyway), but still no code. I am going out of town again next week, but this time driving a bunch, so I guess I shall see if the code reappears or not then.
 

NAiLs

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#22
Took a gander at that 3D part and did not see any garbage inside. I did notice that somewhere inside, it restricts down to less than half the diameter of the small tube that we zip tied. Not quite sure what the idea is there, but it doesn't seem right to me, logically.
 

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Illinois
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2025 Explorer ST
#23
Thanks for the confirmation of the restriction. So it was designed like this? It doesn't make sense to me either. I am wondering if it matters though.

Took a gander at that 3D part and did not see any garbage inside. I did notice that somewhere inside, it restricts down to less than half the diameter of the small tube that we zip tied. Not quite sure what the idea is there, but it doesn't seem right to me, logically.
 

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Location
Alabama
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2025 Ford Explorer ST
#24
Anyone have luck resolving this code yet? I love the sound of the Fenfab but do not want to keep throwing codes especially with how connected these cars are and I'm sure Ford can see the code keeps getting thrown. Considering going back to stock intake.
 

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2025 Explorer ST
#25
Anyone have luck resolving this code yet? I love the sound of the Fenfab but do not want to keep throwing codes especially with how connected these cars are and I'm sure Ford can see the code keeps getting thrown. Considering going back to stock intake.
I've not had the code come back, yet, but I've only driven like 400 miles since my reset. If it goes how a few others have mentioned, it may take a bit for it to show up again. This has got to be a flaw with this intake ... One that doesn't like to show itself.
 

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Location
Alabama
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2025 Ford Explorer ST
#26
I've not had the code come back, yet, but I've only driven like 400 miles since my reset. If it goes how a few others have mentioned, it may take a bit for it to show up again. This has got to be a flaw with this intake ... One that doesn't like to show itself.
I've had to clear the code on three separate occasions, all within about 600 miles of the installation. A notable pattern is that it only triggers when I'm driving (my wife is the primary driver and hasn't seen it), and I always drive in sport mode, though I'm unsure if that's a factor. The very first time, it appeared just a few miles after install during a hard pull. The subsequent two times, however, occurred during regular driving conditions.
 

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Illinois
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2025 Explorer ST
#27
I have not seen the error come back on almost a month's time and about 2,000 miles. The only thing I did was zip tie one of the hoses in the 3D printed tee.
 

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2025 Explorer ST
#28
I have not seen the error come back on almost a month's time and about 2,000 miles. The only thing I did was zip tie one of the hoses in the 3D printed tee.
Gosh, just a few more miles put on than me, since we did this. :ROFLMAO: I don't even have 2000 miles on mine and I bought it at the beginning of February. I'll be putting 1500 on when I head to Asheville in August, at least.

Glad to hear yours hasn't come back, at this point.
 

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Illinois
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2025 Explorer ST
#29
Gosh, just a few more miles put on than me, since we did this. :ROFLMAO: I don't even have 2000 miles on mine and I bought it at the beginning of February. I'll be putting 1500 on when I head to Asheville in August, at least.

Glad to hear yours hasn't come back, at this point.
LOL, I love driving this truck. I even tell my son to take it out. I have made a few road trips for weekend get aways now that the weather has been nice.
 

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#30
LOL, I love driving this truck. I even tell my son to take it out. I have made a few road trips for weekend get aways now that the weather has been nice.
Agree. Mine has become a vehicle that encourages me to find back roads and have fun regularly.


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2025 Explorer ST
#31
LOL Ch
Agree. Mine has become a vehicle that encourages me to find back roads and have fun regularly.


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LOL Chicago and back roads sounds like an oxymoron.... Must be south suburbs? I am in Frankfort, where are you located?
 

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#32
LOL Ch


LOL Chicago and back roads sounds like an oxymoron.... Must be south suburbs? I am in Frankfort, where are you located?
Yeah I hear that. Plainfield area. Still farmland out here. Love long trips too. Taken a few through New England and to Florida. The high speed mountain twisties are the best


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