Question about 2004 Chrysler Town & Country

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2004 Chrysler T&C 3.3L. Engine light on. P0440 & P0440 pending code only. Found loose gas cap. Tightened cap then reset code. Light on again the next day (gas level was about 1/4). Filled tank, cleaned gas cap seal, tighened cap, reset code. Light on when tank level was slightly less than 1/2 full (3/8). New OEM cap, filled tank, reset code. Light on again at 3/8 tank level. Inspected hoses, purge valve for loose connections and cracks. All hoses like new condition.

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  • Jeffrey Turcotte
    Jeffrey Turcotte May 25, 2017

    Hi Frank LaBarbera, I want to help you with your question, but I need more information from you. Can you please add details in the comment box? Have you checked the canister for cracks or loose hoses?

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  • Chrysler Master
  • 53,755 Answers

Code p 0440 refers to the EVAP system --purge valve malfunction
check wiring and replace the purge valve

Posted on May 25, 2017

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Posted on Jan 02, 2017

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micromaster

micromaster

  • 3614 Answers

SOURCE: EVAP control system problems - P0440 and P0456 codes

1) Determine the engine code cause for the Check Engine Light (C.E.L. or CEL)
2) Insert key into ignition
3) turn key to "on" posittion without starting the vehicle
4) VERY VERY quickly turn the key off one click, then on, then off, then on; cycling for 3 turns of the key (NOTE: you might have to try this a couple of times to get it just right)
5) leave on, and read the engine diagnostic code(s) that are output in the mileage counter
6) We got Code P0440 (or P 0440 or P-0440) (variations inserted for search engines)
7) A quick search of the web yielded about 3 or 4 usefull details.
8) Diagnostic code P0440 is the Evaporative Emissions Control System Malfunction (failure) of some type. Details of this type of failure and what the Evap System does for you:
9) Other web pages indicated it might be as simple as the Gas Cap being seated incorrectly, or not sealing correctly any more
10) I took it off, yes it was seated incorrectly, and reseatted it firmly
11) Now you need to clear the Check Engine Light indicator (it will clear *eventually* over time if this is TRULY the problem - I recommend you clear it now - that way is a deeper problem with the EVAP system exists, it should come on again - giving another clue something else is amiss
12) One suggestion was to take the Negative (black) cable off the battery for 10 to 20 seconds -- I did - for 30 seconds to be sure
13) You *must* turn the Engine on and start the vehicle all the way before the Check Engine Light might clear - if it doesn't try the following:
14) Turn the ignition on 50 times - yes - 50 times - but be careful, every time you cycle the ignition on (without starting the vehicle) you are turning on the Fuel Pump - continuous cycling can theoretically (according to some posts) cause it to heat up and be damaged - so every 10 times stop and let it rest for a full minute to cool down.
15) After 30 times of doing this (3 sets of 10), turn the engine fully on - see if the check engine light goes off) if it doesn't, do the remaining 20 times (2 sets of 10).
16) if it still doesn't go off, you may have a deeper issue that might require attention of the mechanics

Posted on Oct 05, 2008

chryslerguy

  • 323 Answers

SOURCE: 2005 Chrysler Town & Country Check engine light came on.

Replace the EGR valve, the code is for EGR system performance

Posted on Jun 03, 2009

emissionwiz

Marvin

  • 85216 Answers

SOURCE: Check valve missing in fuel tank filler neck.

P1444 Purge Flow Sensor Circuit Input Low 0
The evaporative emission control system checks to make sure there are no leaks in the lines that run from the gas tank to the charcoal canister and up to the engine. It also checks to make sure the gas cap is sealing correctly.
When you fill your car with gas, the vapors in the tank get forced into a canister filled with activated charcoal. Also, on a hot day as the gas heats up and vaporizes, those same vapors push into the canister where they're stored. But the charcoal can only hold so much vapor. At some point it has to be emptied. The emptying process is called "canister purge." Here's how it works.
The computer orders a canister purge by powering open a PURGE solenoid. That opens the vacuum line between the canister and the intake manifold. At the same time, it opens a VENT solenoid. That allows fresh air into the canister. So the engine is literally sucking out the gas vapors and purging the canister with fresh air. The computer has to adapt its fuel strategy to take advantage of all the extra gas vapors coming into the engine.
The computer notices the canister is empty when it detects a leaner condition (all the vapors are used up) and it resumes normal fuel delivery. Some car manufacturers then close the VENT solenoid but leave the PURGE solenoid open. That creates a vacuum throughout the entire fuel storage system. Once the correct vacuum is reached, it closed the PURGE solenoid and waits to see if the vacuum holds. If it doesn, the system passes the test. If it detects a leak, it sets a code.
In this code P1444, the computer sees a lower than expected value on the purge flow sensor. bottom line? replace the purge flow sensor.

Posted on Sep 03, 2009

Bob Standard

  • 17 Answers

SOURCE: I have a 2004 Chrysler Town and Country and my

P0440:

  • 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

  • P0441:
    Bad vacuum switch
    • Broken or damaged EVAP line or canister
    • Open in PCM purge command circuit
    • Open or short in Voltage feed circuit to Purge Solenoid
    • Faulty purge solenoid
    • Restriction in EVAP solenoid, line or canister
    • Corrosion or resistance in purge connector
    • Bad PCM

    Posted on Dec 21, 2009

    FixinFax

    Leroy Elliott

    • 3085 Answers

    SOURCE: 07 chrysler sebring check engine light and gascap

    It might take 2 or 3 gas fill-ups before the light goes off. Don't worry.

    Posted on Feb 27, 2010

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    code p0441 refers to EVAP system--incorrect flow detected===causes---hose connections --intake leak--EVAP canister purge valve.
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    I HAVE CODE 0440 MY SERVICE SOON LIGHT ON I FIX FUEL CUP BUT STILL ON LIGHT WHAT TO DO


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    Possible causes- Missing or loose fuel cap
    - Incorrect fuel filler cap used
    - Fuel filler cap remains open or fails to close
    - Foreign matter caught in fuel filler cap
    - EVAP canister or fuel tank leaks
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    I have a 2004 Chrysler Town and Country and my


    P0440:
  • 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

  • P0441:
    Bad vacuum switch
    • Broken or damaged EVAP line or canister
    • Open in PCM purge command circuit
    • Open or short in Voltage feed circuit to Purge Solenoid
    • Faulty purge solenoid
    • Restriction in EVAP solenoid, line or canister
    • Corrosion or resistance in purge connector
    • Bad PCM

    Dec 21, 2009 | 2004 Chrysler Town & Country

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