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P0451 Evaporative Emission check code for 2008 ford escape

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

freetek
  • 5568 Answers

SOURCE: Evaporative emission system - small leak/no BB flow condition

Although I recommend you buy a Haynes service manual for your Dodge, I think you will find the canister attached to the firewall or one of the fender wells. Most of them look a lot like an overgrown spam can and it will have two connections on it.

Posted on Mar 06, 2009

chuck943
  • 783 Answers

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

    • 31 Answers

    SOURCE: Check engine light came on. OBD2 gave me 5

    Take it to autozone. If you live in USA. They have a thing that checks and they will tell you exactly what the codes mean.

    Posted on Sep 04, 2009

    • 11211 Answers

    SOURCE: Evaporative Emission System codes

    check ur gas cap for tight and proper seal that is the most common problem for the the evap codes if cap is good check fuel and vent lines for damage or leaks from gas cap under vehicle up to engine compartment

    Posted on Oct 18, 2009

    ZJLimited
    • 17970 Answers

    SOURCE: code po449 States "Evaporative emission control

    Check engine P codes. GM uses an EVAP solenoid that is located under most vehicles near the gas tank and connects to the charcoal filter can. Codes can be set and will drive you crazy trying to figure out if you have a bad gas cap, broke lines---this is where they try to get you to do a smoke test, or you just think the vehicle is no good.

    Relax, it is usually an easy fix and one GM has known about for years but continues to make easy money off people who cannot do basic maintenance. Now one code that comes up is usually P0449, along with maybe a warning to check the gas cap to see if it is on tight. Chevrolet will gladly read this code out for you for around $98.00 and then fix it for another around $100.00 which includes the EVAP part which if you buy at their parts dept. will cost you $32.00 and my dealership parts man told me they sell one a day! It is easy money for them and obviously a defective part they keep using for the last 10 or 15 years but hey, its money in their pocket. Here is how to fix it with ONE single common screwdriver!

    Get under the vehicle after putting on the parking brake and if you a little hefty, then removing the spare tire on the some vehicles will give you lots more room. The EVAP solenoid is easy to spot near the gas tank and it has one electric connector which disconnects by releasing the plastic clip and pulling the connector out. It also has ONE air line connected which goes to the charcoal cannister which also can be removed with the one screwdriver. The whole EVAP solenoid and air can can be removed with the screwdriver which makes it easier to unpolug the electric and air line. Get a replacement from the dealer as they certainly are familar with this part as they sell LOTS of them. Then just go under and plug the new one in and the problem is solved. Now if you do not have a tool to reset the codes, try the local parts places as most of them will do a reset for you. If you do not have someone to do it, it can be done simply be removing the RED, positive lead off the battery and wait a minute and then plug it back in. The codes are reset but of course now you have to reset the radio and clock stuff.

    Hope helps (remember to rate this answer).

    Posted on Nov 15, 2010

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    I was pumping gas and car stops running and didn't want to start check engine light is on i took to auto zone got code p0451 what's going on 2011 lacrosse


    Possible causes are these so you need to get the vehicle top a competent mechanic to locate the cause in your case.............
    - Faulty Evaporative Emission System Pressure Sensor
    - Evaporative Emission System Pressure sensor harness is open or shorted
    - Evaporative Emission System Pressure sensor circuit has a poor electrical connection
    - Faulty Engine Control Module (ECM)

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    Code reads emission evaporative pressure sensor switch - how do I fix it?


    Replace the switch, or try bypassing it by shorting the 2 terminals together to see if the system will then start up.

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    I have code p0441 i topped off the tank once what will fix it


    code p0441 refers to evaporative emission (EVAP) system--incorrect flow detected====causes -hose connections ---intake leak---EVAP canister purge valve. Check for vacuum leaks including vacuum controls for the vents or replace the purge valve.

    Jul 09, 2014 | 2008 Kia Optima

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    Code P0451 Explanation


    the fuel tank pressure sensor may be the problem. but first check that gas cap is tight and the seal is good on cap. auto parts store will tell you the location of the sensor,or call dealer to find out.

    Apr 11, 2014 | 2005 Ford Mustang

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    What to do with code P0451


    fuel cap, evap canister and its related sensors, vacuum leaks

    Dec 13, 2013 | Ford Cars & Trucks

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    Engine codes p0642 and p0451


    P0451 Evaporative Emission Control System Pressure Sensor Range/Performance

    P0642 Engine Control Module (ECM) Knock Control -Defective
    i think the most likely cause is the anti knock sensor ,this is mainly fitted to american models rather than europeon models owing to the europeon parliament disallowing the high level of biological produced fuel used in america,the answer o this i think is to see the post i have added to this questions answer.

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    2008 Toyota Sienna check engine light is on, diagnostic check reports code PO451. Checked the fuel cap, it is ok, anything else I can do? How can I reset so lights go off?


    Hello and happy holidays
    Fault code P0451 is a code for the fuel tank evaporative emission control pressure sensor, this sensor is located on the top of the fuel tank, the gas cap is not the problem here, as far as the check engine light goes it will reset by itself if the problem is fixed in 3 drive cycles (about 60 miles of mixed driving), to clear it you either use a scanner or disconnect the battery for 5 minutes, I do not recommend the battery method as it can cause you to loose vital settings in the control modules in the car.

    Dec 22, 2010 | Toyota Sienna Cars & Trucks

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    What does po440 on a 2003 saturn vue mean with a service engine soon light on


    That is a problem in the evaporative emission control system.
    Could be anything causing it
    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.

    Aug 13, 2010 | 2003 Saturn VUE

    2 Answers

    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.

    Aug 06, 2010 | 1996 GMC Jimmy

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