Question about Hyundai Motor 2004 Sonata
Engine light came on
Your evaporitive emission system has failed. The code indicates a fuel vapor leak in the purge system.
This can be caused by a loose gas cap to a damaged vacuum hose or regulating component.
Check the gas cap first, make certain the cap is tight and the seal on the cap is in good condition, no tears or damage. Check the fuel filler pipe for knicks and dents.
If the cap was loose, the light will not clear until the next cold start, that is when the engine computer runs the test.
Good luck, let me know.
Posted on Jun 30, 2009
Means canister in ac unit needs servicing.
Posted on Jun 30, 2009
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Posted on Jan 02, 2017
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This indicates that a part of the EVAP control system is no longer fuctioning correctly. The EVAP system consists of many parts, including (but not limited to) the gas cap, fuel lines, carbon canister, purge valve, and other hoses. 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.
EVAP emission canister purge is contolled by a valve which allows engine vacuum to pull stored fuel vapors from fuel tank into the engine to be burned, rather than be vented to atmosphere. A vacuum switch is used to detect when flow exists. If the PCM commands purge and sees that the switch is closed (indicating no detected purge flow) P0441 is set.
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Likely, no symptoms will be discernible to the driver, other than the illuminated Check Engine Light.
A code P0441 could mean one or more of the following has happened:
With a P0441 OBD-II trouble code, diagnosis can be tricky at times. Here are some things to try:
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