November 30, 2020, 03:24:27 PM

Author Topic:  P0442 Small Evap Leak Code  (Read 227 times)

Offline SHO-Pa

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P0442 Small Evap Leak Code
« on: October 20, 2020, 09:48:34 AM »
I did a search and came up empty on this one. On my 2011 SHO I am getting a recurring P0442 Small Evap Leak CEL code. The SHO seems to run fine and has no other codes showing up. I had some work done and it was gone for a while and it has returned. I've already replaced the tube under the hood for the purge valve and my next step is the valve/solenoid at the charcoal cannister. I am beginning to suspect that it's the fuel filler flap thingy as it seems to return after fueling (I do make sure that the fuel door is completely clicked shut). I've already tried to clean the flap thing with the filler funnel (as shown by Fordtechmakuloco).

Has anyone replaced the filler flap thing and if so, how big of a project is it? I suspect that the part is the whole neck and tube to the tank and not just the top end flap. I am open to any hints or suggestions if the charcoal cannister solenoid/valve doesn't do the trick.
2011 SHO - stock
2016 Explorer XLT 2.3L "4wd"
2018 Focus Titanium

Offline 6500rpm

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Re: P0442 Small Evap Leak Code
« Reply #1 on: October 21, 2020, 07:32:13 PM »
I'm guessing your 2011 has the capless fuel filler tube,  it's  not bad to replace. Capless fuel filler and Evap vent solenoid are usually the top two suspects for small evap leaks. Occasionally I've seen things bounce up off the road and tag and crack the canister but thats a long shot.
2013 SHO PP in Ruby Red Metallic, GTG Billet Grills, Duraflex Racer Chin Spoiler, DriveBright LED Driving/Turn Lights,160 T Stat, MSD Coils, All Royal Purple Lubricants, EPP Gen 2 Duel Intake and hotpipes,3 bar, Gearhead AO tuned!


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