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Trouble code P0440 - 2004 Dodge Ram 1500

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This indicates that a part of the EVAP control system is no longer functioning 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.

A code P0440 could mean one or more of the following has happened:
· The gas cap is not installed or working properly
· The purge solenoid has failed
· The canister is plugged and not working properly
With a P0440 OBD-II trouble code, diagnosis can be tricky at times. Here are some things to try:

  • Remove and reinstall the gas cap, clear the code, and drive for a day and see if the codes come back.
  • Inspect the EVAP system for cuts/holes in tubes/hoses
  • Inspect for damaged or disconnected hoses around the Evap purge solenoid
  • Check and/or replace the sensor
  • Check and/or replace the purge valve
  • Have a professional use a smoke machine to detect leaks

Posted on Nov 15, 2009

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F411 &give f440 codes, dealer does not want to reveal meaning


Hello,
Your error code of F411 appears to be not a valid code!
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The error code F440 stands for Evaporative Emission Control System Malfunction

Read more this problem at: http://www.obd-codes.com/p0440
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P0440 OBD II Trouble Code

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SUZUKI VITARA 2001 4L CODE P0440


A code P0440 could mean one or more of the following has happened:
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  • The purge solenoid has failed
  • The canister is plugged and not working properly
Possible Solutions With a P0440 OBD-II trouble code, diagnosis can be tricky at times. Here are some things to try:
  • Remove and reinstall the gas cap, clear the code, and drive for a day and see if the codes come back.
  • Inspect the EVAP system for cuts/holes in tubes/hoses
  • Inspect for damaged or disconnected hoses around the Evap purge solenoid
  • Check and/or replace the sensor
  • Check and/or replace the purge valve
  • Have a professional use a smoke machine to detect leaks

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