P0440 code
Thread Starter
Rookie
Joined: Aug 2016
Posts: 33
Likes: 14
From: AZ
P0440 code
Wanted to share my experience.
Got check engine yellow light - scanner showed code P0440, I replaced gas gap, didn't help. Then I found that PCV valve is very loose, grommet was very hard and brittle. While replacing PCV valve, of course I dropped old grommet inside of valve cover, had small heart attack, but fished it out
Cleared the code, topped the fuel and no check engine light, no pending codes!
Question - could PCV trigger that P0440 code?
Got check engine yellow light - scanner showed code P0440, I replaced gas gap, didn't help. Then I found that PCV valve is very loose, grommet was very hard and brittle. While replacing PCV valve, of course I dropped old grommet inside of valve cover, had small heart attack, but fished it out
Cleared the code, topped the fuel and no check engine light, no pending codes!
Question - could PCV trigger that P0440 code?
Racer
Joined: May 2010
Posts: 1,856
Likes: 87
From: TX
I would say you might be lucky.
These are the possible reasons for the P0440 code:
After you put a couple of fill ups in it let us know how it's doing.
These are the possible reasons for the P0440 code:
Possible causes
- Missing or loose fuel cap
- Incorrect fuel filler cap used
- Fuel filler cap remains open or fails to close
- Foreign matter caught in fuel filler cap
- EVAP canister or fuel tank leaks
- EVAP system hose leaking
- Fuel tank leaking
After you put a couple of fill ups in it let us know how it's doing.
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