Question about 1997 Mercury Cougar XR7

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I have a 97 mercury cougar.It reads an OBD-II code of P1443. I'm pretty sure it means a EVAP emission control system control valve malfunction. What is ti what does it do and where can I locate it under the hood?

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This assembly connects the intake manifold to the charcoal canister and the assembly is made up of hoses, a valve and a sensor. It is located near the front of the engine compartment on the driver’s side (the canister is right behind the driver’s side headlight). Apparently, if there are any cracks in the hoses, or if the valve or the sensor wears out, this will cause the check engine light to come on, and return the P1443 code.

Posted on Jul 05, 2010

  • buckeybbaxte Jul 05, 2010

    When I look behind the headlight what i find is a metal block with brake lines going to it then the battery then coolant overflow and fill the electrical ditribution box then the master brake cylinder in that order from the light to the firewall. Where is it in relation to those?

  • Alex Jul 17, 2010

    It is in front of the battery but lower under the headlight

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What makes my Chevy malibu 2005 v6 put system code po449 out


P0449 - OBD II Trouble Code Evaporative System Vent Valve/Solenoid Circuit Malfunction Our emissions expert has put together the following information about the P0449 fault code. We have also included diagnostic procedures you can take to your repair shop if the mechanic is having difficulty analyzing the code.
OBD II Fault Code
  • OBD II P0449
Fault Code Definition
  • Evaporative System Vent Control Circuit Malfunction
What does this mean? The evaporative control (EVAP) system captures any raw fuel evaporating from the fuel storage system (e.g. the fuel tank, filler neck, and fuel cap). Under precise operating conditions-dictated by engine temperature, speed, and load-the EVAP system stores and purges these captured fuel vapors back into the combustion process. The carbon canister, which stores the raw fuel vapors, utilizes a vent valve that allows fresh air to enter the EVAP system. This displaces the fuel vapor as it's purged into the combustion process. Code P0449 indicates that the evaporative control (EVAP) system vent valve solenoid is malfunctioning. This can be caused by either too little or too much electrical resistance or a mechanical problem with the vent valve itself. Symptoms
  • Check Engine Light will illuminate
  • In most cases, there are no adverse conditions noticed by the driver
  • In some cases, there may be a noticeable fuel odor caused by the release of fuel vapors
Common Problems That Trigger the P0449 Code
  • Missing fuel cap
  • Defective Evaporative Vent Valve
  • Defective or damaged fuel cap
  • Distorted, damaged or cracked Fuel Tank Filler Neck
  • Torn or punctured Evaporative system hose(s)
  • Defective Fuel Tank Sending Unit gasket or seal
  • Split or damaged Carbon Canister
  • Defective or damaged fuel tank
Common Misdiagnoses
  • Fuel cap
  • Evaporative Purge Valve
  • Evaporative Vent Valve
Polluting Gases Expelled
  • HCs (Hydrocarbons): Unburned droplets of raw fuel that smell, affect breathing, and contribute to smog

P0449 OBD II Trouble Code

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What is a fuel trim bank 1 on a 2006 xc90 volvo an whatvis a evap emission system switching valve mean


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  • P2420 Volvo Evaporative Emission (EVAP) System Switching ... www.carobdcode.com/p2420-volvo-evaporative-emission-evap-system... Trouble Code Description: Evaporative Emission (EVAP) System Switching Valve Control Circuit High
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    What does fault code P0497 mean for Honda Cr-v ?


    Nothing for that code either. Are you sure you are reading the reader properly?

    P1382 Cylinder Position Sensor No Signal P1456 EVAP Emission Control System Leak Detected (Fuel Tank System) P1457 EVAP Emission Control System Leak Detected (Control Canister System) P1459 EVAP Emission Purge Flow Switch Malfunction P1486 Thermostat Range/Performance Problem P1491 EGR Valve Lift Insufficient Detected P1498 EGR Valve Lift Sensor High Voltage P1508 IAC Valve Circuit Failure

    Dec 30, 2015 | Honda Cars & Trucks

    1 Answer

    What does fault code P1450 mean for Honda Cr-v ?


    No P1450 on a Honda?

    P1382 Cylinder Position Sensor No Signal P1456 EVAP Emission Control System Leak Detected (Fuel Tank System) P1457 EVAP Emission Control System Leak Detected (Control Canister System) P1459 EVAP Emission Purge Flow Switch Malfunction P1486 Thermostat Range/Performance Problem P1491 EGR Valve Lift Insufficient Detected P1498 EGR Valve Lift Sensor High Voltage

    http://www.obd-codes.com/trouble_codes/honda

    Dec 30, 2015 | Honda Cars & Trucks

    1 Answer

    Code p1443


    without knowing your make or model:

  • p1443
    Evaporative Emission Control System Control Valve
  • audi
    EGR Valve Position Sensor Signal Too Low
  • bmw
    Leakage Diagnostic Pump Control Circuit Signal High
  • ford
    EVAP Control System Purge Control Solenoid or Purge Control Valve Fault
  • hyundi
    EVAP System Tank Cap Missing
  • infinity
    Evaporative Emission Control System Control Valve
  • lexus
    Secondary Air Injection Vacuum Switching Valve Circuit Malfunction Bank 2
  • mazda
    Evaporative Emission Control System Large leak detected
  • mitsubishi
    EVAP Purge Control Valve 2 Circuit Malfunction
  • nissan
    Evaporative Emission Control System Control Valve
  • suburu
    Evaporative Emission Control System Vent Control Function Problem
  • suzuki
    EVAP Purge Control Valve Malfunction- Stuck Open
  • toyota
    Secondary Air Injection Vacuum Switching Valve Circuit Malfunction Bank 2
  • volkswagon
    EGR Valve Position Sensor Signal Too Low
  • Dec 07, 2013 | Cars & Trucks

    2 Answers

    What does the diagnostic code P0446 for a 2001 isuzu rodeo mean?


    Hi, your vent valve has malfuntioned. The vent valve is near the tank, and has a hose to the tank and a solenoid to close it. Check the wiring/connector. If OK, try applying 12 volts directly to the solenoid. If it does not click when voltage is applied, replace the solenoid/valve.

    P0446 Evaporative Emmission Control System Vent Control Circuit OBD-II Trouble Code Technical Description

    Evaporative Emission Control System Vent Control Circuit Malfunction
    What does that mean? Evap vent valve has only one purpose. It closes in order to seal the vent so the EVAP system can pressurize and ensure there are no leaks. Evap vent valve is usually supplied Batt. voltage with key on. The ECM's driver controls the ground, and when grounded, activates the valve (closing it). If the ECM detects a short to ground, and open,or a short to battery voltage on the control circuit, P0446 will set. Code also may refer to ECM detecting that EVAP system is unable to achieve or maintain vacuum during test.
    Symptoms There will be no obvious symptoms to driver, other than MIL illumination.
    Causes A code P0446 could mean one or more of the following has happened:

    • Faulty vent valve
    • Open, short or excessive resistance on Vent valve control circuit
    • Blockage of vent valve
    • Bad PCM
    Possible Solutions With a P0446 OBD-II trouble code, here are some things to try:
    • Replace Vent valve
    • Repair open, short, or resistance problem in control circuit
    • Repair open, or short, or resistance problem in power circuit
    • Replace PCM

    May 14, 2011 | Isuzu Rodeo Cars & Trucks

    2 Answers

    Check engine lite came on code is p1443 what does this code mean


    P1443 Evaporative Emission Control System Control Valve The Evaporative Emission Control System monitors the fuel vapor flow between the engine intake manifold and the EVAP canister. The system failure occurs when a leak or blockage between the intake manifold, the EVAP canister purge valve and the EVAP canister is detected by the PCM.

    Code P1443 Possible Causes:

    - Pinched, blocked or plugged fuel vapor tubes/hoses (except between fuel tank and EVAP canister)

    - Damaged EVAP canister

    - Disconnected, cracked or cut fuel vapor tubes/hoses (except between fuel tank and EVAP canister)

    - Damaged EVAP canister purge valve

    May 04, 2011 | 1997 Ford Escort

    1 Answer

    What p0440 mean in the cars


    P0440 OBD-II - Evaporative Emission Control System Malfunction


    What does that mean?
    This indicates that a part of the EVAP control system is no longer fuctioning 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. The (EVAP) emission control system prevents the escape of fuel vapors from a vehicle's fuel system. Fuel vapors are routed by hoses to a charcoal canister for storage. Later, when the engine is running a purge control valve opens allowing intake vacuum to siphon the fuel vapors into the engine.



    Symptoms:
    FB.init("dd7d9e9681341cde77587bc6a2029f6f"); OBD-Codes.com on Facebook You likely won't notice any drivability problems.



    Causes:
    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

    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

    Hope helps (remember rated this).

    Jul 05, 2010 | 1999 Chevrolet Blazer

    1 Answer

    P1451 Code on Mercury Cougar. How do I fix it


    Here is the information that you need:

    NOTE
    Enter this Pinpoint Test only when directed here.

    The use of a soap solution, such as SNOOP, around the fuel filler cap or the use of the hydrocarbon emission analyzer to determine an evaporative emission system leak is not recommended. The mandatory Rotunda Evaporative Emission System Leak Tester for OBD II (including the ultra-sonic tester) is the only device to be used at this time for evaporative emission system leak detection.

    This Pinpoint Test is intended to diagnose the following:
    Evaporative Emission (EVAP) Monitor System

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    Sep 26, 2009 | 2000 Mercury Cougar

    1 Answer

    OBD II code P1443


    This code is usually caused by a loose gas cap or leaking gas cap cent diaphragm, the purge valve is under the car near the fuel tank

    Nov 10, 2008 | 1997 Mercury Cougar XR7

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