Please Help with Codes

[hotstang_46]

ok, so I just got my car and last owner said the car failed emissions before it was parked 3 years ago. I'm going to be taking it soon here in CALI so I can finalize registering it. I've done the normal.....new air filter, I replaced the faulty fuel pump and filter at the same time, new plugs, sea foam in the crankcase and through intake hose....emissions pass stuff in the tank right now with 87 octane...but I have a service engine light on and am worried that I need to address these problems to pass...

can someone please translate.... the 2 codes read exactly like this...

P0455 EVAP Emission Control System Leak (LARGE)

P1409 Manufacturer controlled auxillary emission controls

Thanks for anyone that can help...I hate overpaying at a shop for something i can do!!

 

[4.6andSlicks]

This indicates a fuel vapor leak or lack of purge flow in the EVAP control system. It means a large leak has been detected. The (EVAP) emission control system prevents the escape of fuel vapors from a vehicle's fuel system. Fuel vapors are routed by hoses to a charcoal canister for storage. Later, when the engine is running a purge control valve opens allowing intake vacuum to siphon the fuel vapors into the engine.

A code p0455 most likely means one or more of the following has happened:

A loose or improperly affixed gas cap
A non-conforming gas cap (i.e. not factory/original brand)
Other leak or damaged piece in EVAP system

With a p0455, the most common repair is to:

Remove and reinstall the gas cap, clear the codes, and drive for a day and see if the codes come back.
Otherwise, replace the gas cap, and/or
Inspect the EVAP system for cuts/holes in tubes/hoses (you may hear a vacuum noise or smell fuel), repair if necessary

Good luck

 

[hotstang_46]

so for the first code....is there a good chance that if i just go ahead and replace the purge regulator valve and charcoal canister the code will go away? provided all lines are ok??