The check engine light went off on it's own ? Before replacing the purge solenoid did you test the evap system by smoke checking ? Would have other code's besides P0455 if purge solenoid was bad. DTC P0455: Evaporative Emission (EVAP) System Large Leak Detected
• Inspect for a loose, missing, damaged, or incorrect fuel fill cap.
• Inspect for a damaged fuel filler neck seal surface.
• A blockage or restriction in the EVAP purge solenoid valve, purge pipe, EVAP canister, or vapor pipe, can cause this DTC to set.
• The EVAP system can be filled with smoke more quickly and completely by opening the system opposite the end where the smoke is injected. For example, when injecting smoke at the service port remove the fuel fill cap, or temporarily leave the vent open, until smoke is observed, then close the system and continue testing. If using a fuel cap adapter at the filler neck, use the J 41413-VLV at the service port to allow the system to fill faster.
• To help locate intermittent leaks using the J 41413-200 , move all EVAP components while observing smoke with the J 41413-SPT .
• Individual components can be isolated and tested using adapters in the J 41413-300 .
• A condition may exist where a leak in the EVAP system only exists under a vacuum condition. This type of leak may be detected by using the scan tool Purge/Seal function to create a vacuum in the EVAP system and then observe the FTP parameter for vacuum decay.
Thanks Jeff that was very helpful
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SOURCE: I have 1997 F150,check engine light came on, took
maybe a fuse is blown? did you have the mechanic check the fuses? or even check all your relays and wiring?
SOURCE: 2008 suburban i have code
sad to say that you miss on what you did, dtc P0449 was related to vent solenoid contol circuit, purge problem indicates P0443,, check the vent valve connectors supply voltage from the power distribution box, (fuse # 14-tcm/batt) and the other wire(almost white) to ecm C1 #61.
SOURCE: replaced purge solenoid po449 code
P0449 is a fault with the vent solenoid at the rear near the gas tank, not a fault for the purge solenoid, which is under the hood.
SOURCE: 2006 Ford Fusion 2.3L I4 Engine Check engine light
Common Problems That Trigger the P0455 Code
Common Misdiagnoses
This is a link to a Ford Motor Company PDF file that explains this fault in great detail and is worth reading and studying.
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http://www.motorcraftservice.com/vdirs/diagnostics/pdf/OBDSM601.pdf
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