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2004 Dodge Status R/T Coupe 3.0L A/T - P0455 Code: How to Diagnose and Fix Without Gas Leak Signs

Model: 2004 Dodge Status R/T Coupe Fault Code: P0455 Posted: 2012-04-05 09:41

Hello everyone, I'm looking for help with a persistent P0455 diagnostic code on my wife's 2004 Dodge Status R/T Coupe (3.0L, automatic transmission, 172k miles). The car has no noticeable gas fumes or visible leaks, and I've already checked the fuel cap, all hoses, and performed a smoke test with a friend—results showed no issues. Despite this, the check engine light is triggered by code P0455 (Evaporative Emission System Leak Detected). What else should I inspect? Is it possible that the issue lies in the purge solenoid or vapor canister despite no visible leaks?

Related fault codes
P0455
Comments (3)
Anonymous 2012-04-05 21:12

The purge solenoid is a likely culprit. It's located inside the fuel tank ventilation system, typically near the fuel filler neck or in the engine bay behind the intake manifold. To test it: disconnect the electrical connector and use a multimeter to check for proper vacuum operation—when the engine is running, it should hold vacuum. If it fails to maintain vacuum, replace it. Note that 'vacuum switching valve' is often used interchangeably with purge solenoid in older models like this one.

Anonymous 2012-04-06 11:07

Hello Jeff, Thank you for the response. Do you know where the purge solenoid is located and how I can test it? I’ve tried searching online, but the part seems hard to find—would 'Vacuum Switching Valve' be an accurate term for this component in a 2004 Dodge Status R/T? I was also advised to check the vapor canister. Any guidance on testing or replacing either would be greatly appreciated. Thank you, Brett

Anonymous 2012-04-07 04:49

Call your local Dodge dealer and provide them with the VIN—official diagnostics are most reliable for this issue. While 'vacuum switching valve' is common in imported vehicles, it's not the standard term used on U.S.-made Dodge models like this one. If there are no detectable leaks during a smoke test or visual inspection, then the vapor canister may be the root cause—but first confirm that the purge solenoid holds vacuum under engine load. A failed solenoid will trigger P0455 even without visible emissions. If the issue persists, take it to your local Dodge dealer for professional testing and repair.