P0441 Evaporative Emission Control System Incorrect Purge Flow

Description and meaning of DTC p0441

This diagnostic trouble code (DTC) is a generic powertrain code, which means that it applies to OBD-II equipped vehicles. Although generic, the specific repair steps may vary depending on make/model. This indicates that a part of the EVAPcontrol system is no longer functioning correctly. The EVAP system consistsof many parts, including (but not limited to) the gas cap, fuel lines, carboncanister, purge valve, and other hoses. The (EVAP) emission control system preventsthe escape of fuel vapors from a vehicle's fuel system. Fuel vapors are routedby hoses to a charcoal canister for storage. Later, when the engine is runninga purge control valve opens allowing intake vacuum to siphon the fuel vaporsinto the engine. EVAP emission canister purge is controlled by a valve which allows engine vacuumto pull stored fuel vapors from fuel tank into the engine to be burned, ratherthan 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 nodetected purge flow) P0441 is set.

p0441 diagnostic trouble code symptoms

Likely, no symptoms will be discernible to the driver, other than the illuminatedCheck Engine Light.

DTC p0441 - possible causes

A code P0441 could mean one or more of the following has happened:Bad vacuum switchBroken or damaged EVAP line or canisterOpen in PCM purge command circuitOpen or short in Voltage feed circuit to Purge SolenoidFaulty purge solenoidRestriction in EVAP solenoid, line or canisterCorrosion or resistance in purge connectorBad PCM

How to fix OBD-II diagnostic trouble code p0441

With a P0441 OBD-II trouble code, diagnosis can be tricky at times. Hereare some things to try:Common Chrysler fix - Replace Leak Detection Pump / LDPRepair damaged EVAP lines or canisterRepair open or short in voltage feed circuit to Purge SolenoidRepair open in PCM purge command circuitReplace purge Solenoid Replace vacuum switchRepair restriction in Evap line or canister or solenoid Repair resistance in purge connectorReplace PCMOther EVAP DTCs: P0440 - P0442 - P0443 - P0444 - P0445 - P0446 - P0447 - P0448 - P0449 - P0452 - P0453 - P0455 - P0456

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