EVAP codes P0441, P1421 ! SOLVED !
#1
Instructor
Thread Starter
EVAP codes P0441, P1421 ! SOLVED !
In December after a visit at gas station the check engine light was ON. Visited nearest O'Reilly store to read errors. Scanner showed P0441 (EVAP System Incorrect Purge Flow) and P1421 (EVAP Canister Gross Leak).
I bought a new gas cap (~$25) but it didn't help.
Then I visited the shop that specialized in Japanese cars and they found a broken EVAP hose (#3 on the image) - there was no vacuum in the system. Several days later I pulled hose #2 (without power) and it broke also (because of age), so I decided to replace all 3 hoses. I did it yesterday, errors were cleaned, check engine light is OFF now.
I bought a new gas cap (~$25) but it didn't help.
Then I visited the shop that specialized in Japanese cars and they found a broken EVAP hose (#3 on the image) - there was no vacuum in the system. Several days later I pulled hose #2 (without power) and it broke also (because of age), so I decided to replace all 3 hoses. I did it yesterday, errors were cleaned, check engine light is OFF now.
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#2
Lexus Test Driver
In December after a visit at gas station the check engine light was ON. Visited nearest O'Reilly store to read errors. Scanner showed P0441 (EVAP System Incorrect Purge Flow) and P1421 (EVAP Canister Gross Leak).
I bought a new gas cap (~$25) but it didn't help.
Then I visited the shop that specialized in Japanese cars and they found a broken EVAP hose (#3 on the image) - there was no vacuum in the system. Several days later I pulled hose #2 (without power) and it broke also (because of age), so I decided to replace all 3 hoses. I did it yesterday, errors were cleaned, check engine light is OFF now.
I bought a new gas cap (~$25) but it didn't help.
Then I visited the shop that specialized in Japanese cars and they found a broken EVAP hose (#3 on the image) - there was no vacuum in the system. Several days later I pulled hose #2 (without power) and it broke also (because of age), so I decided to replace all 3 hoses. I did it yesterday, errors were cleaned, check engine light is OFF now.
Thank you for sharing your fix!
I got the P0441 code this week.
Cleared it but it came back as "pending".
Except for the EVAP VSV's mounted on the engine which were already replaced with new vacum lines too, I haven't dug into the EVAP system on this car much.
Fuel trims are good so not expecting a vacuum leak from intake.
>> I'm guessing this pic is for the components under the car near the gas tank so I might have to check it out.
Last edited by Margate330; 02-03-21 at 06:31 PM.
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Margate330 (02-04-21)
#5
Racer
thanks for the info on this; now i know what to look towards if these codes every pop up on mine.
#6
In December after a visit at gas station the check engine light was ON. Visited nearest O'Reilly store to read errors. Scanner showed P0441 (EVAP System Incorrect Purge Flow) and P1421 (EVAP Canister Gross Leak).
I bought a new gas cap (~$25) but it didn't help.
Then I visited the shop that specialized in Japanese cars and they found a broken EVAP hose (#3 on the image) - there was no vacuum in the system. Several days later I pulled hose #2 (without power) and it broke also (because of age), so I decided to replace all 3 hoses. I did it yesterday, errors were cleaned, check engine light is OFF now.
I bought a new gas cap (~$25) but it didn't help.
Then I visited the shop that specialized in Japanese cars and they found a broken EVAP hose (#3 on the image) - there was no vacuum in the system. Several days later I pulled hose #2 (without power) and it broke also (because of age), so I decided to replace all 3 hoses. I did it yesterday, errors were cleaned, check engine light is OFF now.
#8
The following users liked this post:
Margate330 (05-18-21)
#9
Lexus Test Driver
Subscribed. lol
Waiting to see what other people find before digging in.
I have an annoying "small leak" evap code popping up randomly for a while now too and I haven't had the time or patience to deal with locating it and I have no smoke machine either so interested what other people find.
Just looking under the car the evap canister is not in a fun place- over the exhaust and behind a heat shield so rather not go there if I don;t have to and hoping the leak is somewhere else more accessible.
Waiting to see what other people find before digging in.
I have an annoying "small leak" evap code popping up randomly for a while now too and I haven't had the time or patience to deal with locating it and I have no smoke machine either so interested what other people find.
Just looking under the car the evap canister is not in a fun place- over the exhaust and behind a heat shield so rather not go there if I don;t have to and hoping the leak is somewhere else more accessible.
#11
#12
A bit more digging, hoses look OK but they are hard. Lexus dealer wants $37 plus tax for those three hoses. Wondering if I can use bulk hose.
Last edited by bcolins; 05-19-21 at 03:27 PM.
#14
I just went out to have another close look at that hose number three. how did you even get to it? I can’t even see the lower clamp point or how to get to it.
Last edited by bcolins; 05-19-21 at 03:41 PM.
#15
Instructor
Thread Starter
I..
Then I visited the shop that specialized in Japanese cars and they found a broken EVAP hose (#3 on the image) - there was no vacuum in the system. Several days later I pulled hose #2 (without power) and it broke also (because of age), so I decided to replace all 3 hoses.
Then I visited the shop that specialized in Japanese cars and they found a broken EVAP hose (#3 on the image) - there was no vacuum in the system. Several days later I pulled hose #2 (without power) and it broke also (because of age), so I decided to replace all 3 hoses.