P0441 2004 TOYOTA HIGHLANDER Code - Evaporative Emission Control System Incorrect Purge Flow
|P0441 2004 TOYOTA HIGHLANDER code possible causes
- Missing Fuel cap
- Incorrect fuel filler cap used
- Fuel filler cap remains open or fails to close
- Foreign matter caught in fuel filler cap
- Incorrect fuel tank vacuum relief valve
- Purge VSV
- Leakage from EVAP system
|How do I fix the P0441 2004 TOYOTA HIGHLANDER code?Check the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.
|P0441 2004 TOYOTA HIGHLANDER code tech notesThere is a Factory Service Bulletin for the 2004 Toyota Highlander:
2004 Toyota Highlander Factory Service Bulletin OBDII Code P0441
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|Cost of diagnosing the P0441 2004 TOYOTA HIGHLANDER code
Labor: 1.0The cost of diagnosing the P0441 2004 TOYOTA HIGHLANDER code is 1.0 hour of labor. The auto repair's diagnosis time and labor rates vary by location, vehicle's make and model, and even your engine type. Most auto repair shops charge between $75 and $150 per hour.
|When is the P0441 2004 TOYOTA HIGHLANDER code detected?Pressure in charcoal canister and fuel tank does not drop during purge control (2 trip detection logic)
|What are P0441 2004 TOYOTA HIGHLANDER code possible symptoms?
- Engine Light ON (or Service Engine Soon Warning Light)
- Possible a noticeable fuel odor caused by the release of fuel vapors
|P0441 2004 TOYOTA HIGHLANDER code descriptionThe Engine Control Module (ECM) tests the Evaporative Emission (EVAP) system for the following conditions:
- Large and small leaks
- Excess vacuum
- Purge flow during non-commanded conditions
- Fuel Level and Fuel Pressure sensor faults
- EVAP Purge and Vent Valve faults
The ECM monitors the Fuel Tank Pressure sensor in order to determine the level of vacuum/pressure in the EVAP system. The ECM commands both the EVAP Purge Solenoid and the EVAP Vent Valve ON when the conditions are met in order to apply an engine vacuum to the EVAP system. The ECM commands the EVAP Purge Solenoid OFF once the system has reached a predetermined level of vacuum. This test verifies if a vacuum can be achieved in the EVAP system. Failure to develop a vacuum may be caused by a large leak or a restriction.
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