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The purge valve in the 2004 Hyundai Santa Fe can sometimes have issues. To find and replace this part, you'll need to pop the hood and take out the air intake box near the intake manifold. You'll spot the purge valve located behind the intake manifold. It's also known as a "solenoid" and plays a role in the Santa Fe's EVAP and emissions setup. This system captures vapors from the fuel tank in the EVAP canister. Inside the canister, charcoal breaks down these vapors into less harmful substances. The fumes then enter the engine where they are burned like regular fuel. The purge valve controls when these vapors are released. When the purge valve malfunctions, it may get stuck open or fail to open at the right time. Signs of trouble include the check engine light turning on, displaying the P0441 error code, experiencing lower fuel efficiency, and rough idling.
You can find the purge valve on your 2004 Hyundai Santa Fe by looking for the charcoal canister located near either the left or right front headlight of the Santa Fe, depending on the specific year and model.