Question about 2011 Ford Fiesta

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Lost communication with evaporative emission system leak detection control module permanent

Check engine light is on. Its reads back a code that says it is lost communication with evaporative system, leak detection control module and says permanent whats this mean and what part of the car does it have to do with. is there a fix for it?

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Are you okay nothing hapened to you right did you
bleed did you heart some where of your body

Posted on Nov 27, 2013

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Posted on Jan 02, 2017

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chuck943
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SOURCE: what P0453-Evaporative Emission control System Pressure Sensor h

P0453 is for the fuel tank pressure sensor. This code means that the voltage on the sensor was greater than 4.5V during key on engine off or during any engine operating mode.
Normal voltage from this sensor with no vacuum or pressure on the system should be 2.37 to 2.97V.
PCM sends a reference voltage of 5V to the sensor and tells if there is pressure or vacuum in the fuel tank by the voltage that returns from the sensor.

Possible causes are:

  • FTP circuit open
  • VREF shorted to VPWR
  • Damaged PCM
  • FTP circuit shorted to VREF or VPWR
  • SIG RTN circuit open
  • Damaged FTP sensor

  • Usually it is a loose connector at the sensor or a bad sensor.
    It mounts on top of the fuel tank,has a 3 wire connector. To replace it you have to push down on it and twist,if I remember right CC.

    Posted on Mar 10, 2009

    • 29 Answers

    SOURCE: engine light -on . did scann with obd 2 scanner.

    This code is refering to an area close to where you fill your gas tank. There is a box back there that has a job of capturing the gas vapors from your gas tank the computer in your car has found a problem in that system but it would depend on what the code said (small leak ) would be the evap box has a leak. If the code said (gross leak) it is a loose gas cap or bad gas cap . If it is the evap box you will need to have a shop hook up a smoke machine to find the leak

    Posted on Mar 23, 2009

    • 416 Answers

    SOURCE: have a 2004 f-150 ford truck code comes up as

    may just be a loose gas cap I would check that 1st

    Posted on Mar 24, 2010

    Testimonial: "EXCELLANT HELP THANKS"

    SOURCE: Evaporative Emission Control System Gross Leak

    Have a shop with a smoke machine,smoke test it, and repair the EVAP Leak

    Posted on Nov 07, 2010

    ZJLimited
    • 17970 Answers

    SOURCE: code P0442-evaporated emissions control system leak.what does this mean,and how do i fix this problem on my 1998 ford explorer.

    Hi there:
    P0442 - Evaporative Emission Control System Leak Detected (small leak)
    This indicates a fuel vapor leak in the EVAP control system. It means a very small leak has been detected. In fact, the leak can be from a hole as small as 0.04" in diameter. 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.

    You likely won't notice any drivability problems.

    A code P0442 most likely means one or more of the following has happened:
    A loose or improperly affixed gas cap
    A non-conforming gas cap (i.e. not factory/original brand)
    A small leak/hole in a fuel vapor hose/tube
    Other small leak in EVAP system
    Faulty vent o-ring seal

    Possible Solutions: with a P0442, the most common repair is to:
    Remove and reinstall the gas cap, clear the codes, and drive for a day and see if the codes come back.
    Otherwise, replace the gas cap, or
    Inspect the EVAP system for cuts/holes in tubes/hoses

    Hope this helps; also keep in mind that your feedback is important and I`ll appreciate your time and consideration if you leave some testimonial comment about this answer.

    Thank you for using FixYa, have a nice day.

    Posted on Jul 15, 2012

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    B1342 is not an engine code. P0456 is. Follow the link for more info. P0456 Evaporative Emissions System Small leak detected

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    P1495 Dodge P1495 Dodge - EVAP Leak Detection Pump Solenoid Circuit Condition 3 ' Add Comment Possible causes
    - Faulty Leak Detection Pump (LDP)
    - Leak Detection Pump (LDP) harness is open or shorted
    - Leak Detection Pump (LDP) poor electrical connection
    What does this mean? When is the code detected?
    Malfunction is detected when the Powertrain Control Module (PCM) detected the pump solenoid did not change status when activated,
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    During the self-diagnostics, the Powertrain Control Module (PCM) first checks the Leak Detection Pump (LDP) for electrical and mechanical faults. If the first checks pass, the PCM then uses the LDP to seal the vent valve and pump air into the system to pressurize it. If a leak is present, the PCM will continue pumping the LDP to replace the air that leaks out. The PCM determines the size of the leak based on how fast/long it must pump the LDP as it tries to maintain pressure in the system.

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    I would like to know what the code PO455 on a 2007 Mitsubishi Endeavor means.


    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
    - EVAP system hose leaking
    - Fuel tank leaking
    help.jpg What does this mean? Tech notes
    The P0455 it's a very common code, because the code is set if the gas cap is loose or missing. Start by tighten the gas cap and clearing the code. In most cases the code can be clear by disconnecting the car battery for about 30 minutes.
    help.jpg What does this mean? When is the code detected?
    Evaporative Emission System (EVAP) control system has a very large leak such as fuel filler cap fell off, EVAP control system does not operate properly.
    Possible symptoms
    - Engine Light ON (or Service Engine Soon Warning Light)
    - Possible a noticeable fuel odor caused by the release of fuel vapors
    P0455 Mitsubishi Description
    This diagnosis detects leaks in the Evaporative Emission System (EVAP) purge line using engine intake manifold vacuum. If pressure does not increase, the Engine Control Module (ECM) will check for leaks in the line between the fuel tank and EVAP canister purge volume control solenoid valve under the following vacuum test condition.
    The vacuum cut valve bypass valve is opened to clear the line between the fuel tank and the EVAP canister purge volume control solenoid valve. The EVAP canister vent control valve will then be closed to shut the EVAP purge line off. The EVAP canister purge volume control solenoid valve is opened to depressurize the EVAP purge line using intake manifold vacuum. After this depressurization is implemented, the EVAP canister purge volume control solenoid valve will be closed.

    Read more: http://engine-codes.com/p0455_mitsubishi.html#ixzz3NlVyARyX

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    I replaced evap vent solenoid & dtc came back


    Here is the definition of the code and possible causes.

    P0449 PONTIAC Description The Engine Control Module (ECM) monitors the Evaporative Emission System (EVAP) Vent Valve/Solenoid system wiring for opens or shorts.

    When is the code detected?The Engine Control Module (ECM) has determined that a malfunction exists in the electrical circuit for the vent valve/solenoid in the evaporative emission control system.

    Possible causes - Vacuum leaks, damaged hoses or improper routing
    - EVAP system - Check fuel cap, canister, valves or components
    - Faulty purge or vent solenoids
    - Check connector and wiring
    - Fuel saturated vapor canister
    - Failed EVAP vent solenoid
    Read more: http://engine-codes.com/p0449_pontiac.html#ixzz2M1YJd7DU

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    Started having issues last 2 week where the fuel gauge would just die and then come back on. Yesterday, the check engine light came on and I testerd the computer mod which gave out code of P0442.


    P0442 = Evaporative Emission System-Leak detected (small leak)
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    That is a problem in the evaporative emission control system.
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    Clogged filter in the charcoal canister
    A leak in one of the vacuum lines
    The purge valve not working,,,etc.
    The best thing is to take it and have it checked out, they might have to do a smoke test to find the problem.
    All they do is inject smoke into the system, if there is a leak the smoke will come out of it. All it takes is a pin hole in these emission systems to screw it all up.

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    I checked the codes and one comes up its po446. i dont under stand what it mean so i cant fix it to get the light to go out.


    P0446 Evaporative Emission System Vent Control Circuit.
    The following are descriptions of all Evaporative possible codes:

    P0441 Evaporative Emission System Incorrect Purge Flow
    P0442 Evaporative Emission System Leak Detected (small leak)
    P0443 Evaporative Emission System Purge Control Valve Circuit
    P0444 Evaporative Emission System Purge Control Valve Circuit Open
    P0445 Evaporative Emission System Purge Control Valve Circuit Shorted
    P0446 Evaporative Emission System Vent Control Circuit
    P0447 Evaporative Emission System Vent Control Circuit Open
    P0448 Evaporative Emission System Vent Control Circuit Shorted
    P0449 Evaporative Emission System Vent Valve/Solenoid Circuit
    P0450 Evaporative Emission System Pressure Sensor/Switch
    P0451 Evaporative Emission System Pressure Sensor/Switch Range/Performance
    P0452 Evaporative Emission System Pressure Sensor/Switch Low
    P0453 Evaporative Emission System Pressure Sensor/Switch High
    P0454 Evaporative Emission System Pressure Sensor/Switch Intermittent
    P0455 Evaporative Emission System Leak Detected (large leak)
    P0456 Evaporative Emission System Leak Detected (very small leak)
    P0457 Evaporative Emission System Leak Detected (fuel cap loose/off)
    P0458 Evaporative Emission System Purge Control Valve Circuit Low
    P0459 Evaporative Emission System Purge Control Valve Circuit High
    ---
    At least the cap isn't loose for the gas tank.

    I would clear the code with an OBD-II Scanner 'erase code' button, and see how long it takes for it to come back.

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    My check engine light on my 2001 hyundai accent gl reads code po441, po442. What does these codes mean?


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    MOre info at http://www.obd-codes.com/p0442

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