P0441 code is not the NVLD



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Thread: P0441 code is not the NVLD

  1. #1
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    P0441 code is not the NVLD

    I posted about swapping out the NLVD (natural vac leak detection assembly) because my '01 Voyager 3.3 Flex Fuel was throwing a P0441 code. Everything fit together well enough on the swap. However, I'm throwing out this code again. Anyone have other suggestions as what could be wrong?
    2005 Grand Caravan SXT 3.8L (100K miles and running strong)
    2001 Chrysler Voyager 3.3L Flex Fuel (220K miles and running strong)

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  3. #2
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    Emissions leak. You just ruled out the NVLD was broken, leaking, or disconnected - throwing the code and MIL. It is (and was) detecting a leak in the EVAP system.

    P0441 (M) Evap Purge Flow Monitor Insufficient or excessive vapor flow detected during evaporative emission system operation.

    P0442 (M) Evap Leak Monitor 0.040 Leak Detected
    A 0.040 leak has been detected in the evaporative system.

    P0443 (M) Evap Purge Solenoid Circuit An open or shorted condition detected in the EVAP purge solenoid control circuit.

    P0452 NVLD Pressure Switch Stuck Closed NVLD pressure switch stuck closed.

    P0453 NVLD Pressure Switch Stuck Open NVLD pressure switch stuck open.

    P0455 (M) Evap Leak Monitor Large LeakDetected
    A large leak has been detected in the evaporative system.

    P0456 (M) Evap Leak Monitor 0.020 Leak Detected
    A 0.020 leak has been detected in the evaporative system.

    (M)=MIL lit

    -Jim

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    What are the other components in the EVAP system?
    2005 Grand Caravan SXT 3.8L (100K miles and running strong)
    2001 Chrysler Voyager 3.3L Flex Fuel (220K miles and running strong)

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    ******** We took the time to answer your post. Please give us some time and post the fix. You'll help hundreds. ********

    **** Follow all prescribed safety procedures before attempting any repairs. If in doubt, refer to a maintenance manual. ****

    96 Gr Caravan LE 3.8, 208K miles
    07 Fusion / 06 RAV 4 / 06 Accord / 94 Camry

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