The owner of a 2006-11 Civic model may come in with the check engine light on and EVAP system trouble code P2422 stored in the PCM.
One probable cause for the malady, Honda said, is a spider web or insect nest blocking off the EVAP charcoal canister vent tube.
Installing an improved vent tube — part No. 17744-SNA-A10, 2006 models; part No. 17744-SNA-A01, 2007-11 models — should eliminate the condition.
Start the repair by getting the vehicle on a lift. Now locate the charcoal canister just in front of the gas tank and remove the canister's cover.
Using the illustration above, open the vent tube retaining clips, then disconnect the vent tube from both the canister and vehicle body.
Continue the fix by removing the front bolt from the left fuel tank support strap bolt, then loosen the rear bolt and move the strap aside.
Remove the clogged vent tube and install the upgraded tube in its place. Rotate the fuel tank support strap back into position, reinstall the front bolt, then tighten both bolts.
Connect the new vent tube to the EVAP canister and vehicle body and secure the tube with the retaining clips, as shown.
To complete the fix, reinstall the canister cover, lower the vehicle, clear the trouble code and run an EVAP system functional test with a scan tool.
"Factory Fixes" is written by Jim DePalma, a 30-year veteran of the auto repair business who has served stints as a service manager, parts manager and ASE-certified technician. His column provides vehicle manufacturers' authentic factory technical service bulletins (TSBs) that have been condensed for easier reading. Mr. DePalma advises that techs always check with a dealer or repair information system for the latest revisions before starting to work on a vehicle. He can be reached via e-mail at [email protected].