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Old 08-08-2011, 07:05 AM   #1
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Default DTC P2422 (EVAP canister vent shut valve close malfunction)

Dear Smarter-Than-Me,
I got this code: DTC P2422 (EVAP canister vent shut valve close malfunction) in my 2008 Honda Accord. I read the technical service bulletin and it says there is spiderwebs most likely causing the issue as they get in the EVAP vent hose or drain box. My questions is, what does the EVAP canister look like and where specifically is it located? The TSB says it is above the driver's side rear subframe. Am I blind or is it right in front of me? Can anybody explain what it look like so I have a clue what I am looking for?

Also, for anyone else having the same code, here is the TSB I found online in full:

July 7, 2009

Applies To:
2008-09 Accord - ALL

MIL Comes On With DTC P2422

(Supersedes 08-087, dated November 14, 2008, to revise the information marked by the black bars and asterisks)


Under PARTS INFORMATION, the part number and Honda code for the Fuel Drain Spring were changed.*


The MIL comes on with DTC P2422 (EVAP canister vent shut valve close malfunction).


Spider webs are clogging the EVAP canister vent hose or the drain box.


Clean the spider webs out of the EVAP canister vent hose or the drain box, and install a spring in the drain box.


*Fuel Drain Spring/N 17745-TA0-A01, H/C 9175183*


In warranty:
The normal warranty applies.

Operation Number: 1200A1

Flat Rate Time: 0.3 hour

Failed Part: P/N 17743-TA0-A01
H/C 8647604

Defect Code: 05401

Symptom Code: 03203

Template ID: 08-087B

Skill Level: Repair Technician

Out of warranty:
Any repair performed after warranty expiration may be eligible for goodwill consideration by the District Parts and Service Manager or your Zone Office. You must request consideration, and get a decision, before starting work.


Certain types of spiders are poisonous and you could be severely injured if bitten.

Always wear gloves to protect your hands, and avoid physical contact with any spiders that you find when performing these procedures.

REPAIR PROCEDURE Put the vehicle on a lift. Locate the mounting bolt for the EVAP drain box above the driver's side rear subframe, and remove the bolt.Pull down the drain box, then disconnect the fuel tank pressure (FTP) sensor vent hose from the drain box, and disconnect the EVAP vent hose from the EVAP canister.Remove the EVAP vent hose from the drain box, then remove the drain box cover by prying open the retaining tabs with a small screwdriver.4. Inspect the EVAP vent hose and the drain box.

Are there spider webs in the drain box or in the EVAP vent hose?

Yes - Go to step 5.

No - Go to step 6.

5. Clean the spider webs out of the drain box and the EVAP vent hose with compressed air or a small cleaning brush.

6. Install the fuel drain spring over the EVAP vent hose port in the drain box as shown, then reinstall the drain box coverNOTE :If any of the drain box cover retaining tabs are damaged or broken, replace the drain box.

7. Reinstall the drain box and the EVAP vent hose on the vehicle.

8. Use the HDS to clear the DTC, then run the EVAP system function test.

Does the vehicle pass the EVAP system function test?

Yes - The repair is complete.

No - There are other problems with the EVAP system. Continue with normal troubleshooting procedures.
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Old 08-08-2011, 07:16 AM   #2
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Default Re: DTC P2422 (EVAP canister vent shut valve close malfunction)

Actually, I just found the actual TSB with pictures of the procedure....Here is the link if anyone cares.
http://mordor.rutgers.edu/accord/tsb/08-09%20MIL%20P2422%2008-087.pdf thanks. This Honda-Tech site is great.

Also, I ran through the procedure and sure enough, there was spider webbing blocking the valve. Cleaned it out and no more alarms. So, the fix works....

Last edited by jottman; 08-08-2011 at 08:59 PM.
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