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Evaporative emissions how to fix a evaporative emission control system pressure sensor low for buick lesabre

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Google the Evap Code you got
If that sensor is on top of fuel tank,
you what has to be done
Use the internet to find the solution
Need a professional scan tool & maybe a smoke
machine to work on the Evap System.

Posted on Jul 19, 2013

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6 Suggested Answers

6ya6ya
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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

    GM Elec
    • 1000 Answers

    SOURCE: 2004 buick regal evaporative emission control system leak gross l

    First thing to check is the gas cap, make certain it is tight and the cap seal is not damaged or cut. In many cases this is the root cause for the P0455.
    If that checks good, you want to check the vacuum hoses from the EVAP purge solenoid under the hood, all the way back to the EVAP canister. Make certain all are connected and not damaged or cracked.
    Let me know.
    Regards,

    Posted on Apr 03, 2009

    Molson02536
    • 3854 Answers

    SOURCE: 1998 PONTIAC SUNFIRE ADVISE

    Exhaust Gas Recirculation System Is the main problem here. the other code P0118 may be a bad temprature sensor or your thermostate needs to be changed. Last it could be a weak water pump. 

    So what is an EGR system and how does it work? EGR stands for Exhaust Gas Recirculation, and as its name implies, this system allows exhaust gasses from your car to be re-circulated into the engine, helping to reduce emissions. These systems are mostly comprised of the EGR valve, a DPFE (Delta Pressure Feedback EGR) sensor, hoses, a vacuum regulator, some vacuum lines, wiring, the computer and the exhaust tube leading to the valve itself. 
    The car's wiring can be tested in the normal fashion by looking for broken and lose wire, and all vacuum lines can be checked easily for cracks, leaks and correct routing.
    The last thing i would then check is the the EGR valve, EGR vacuum regulator and DPFE sensor (or similar flow sensor).
    I hope this helps and good luck

    Posted on Apr 09, 2009

    • 1201 Answers

    SOURCE: 2005 LeSabre check engine light on due to evaporative emissions

    Finding a leak in these emission systems is almost impossible.
    All it takes is a pin hole in a hose to screw up the whole system.
    The best way to find the leak is to take and have a smoke test done on it. Smoke is injected into the system and where ever the leak is , the smoke will leak out of it. It's faster and more reliable then replacing hoses and other things you don't need. Call dealers, or repair shops to see who does smoke tests.

    Posted on Apr 23, 2010

    • 181 Answers

    SOURCE: Im trying to locate the Evaporative emission

    It is built onto the fuel pump. You can access the fuel pump in the trunk under the carpet. Remove the bolts from the rectangular cover and it is the black sensor pushed into the fuel pump housing.

    Posted on May 19, 2010

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    1 Answer

    What's trubleP0453 on 99 gmc new Sierra 1500 4.8


    P0453 - Evaporative Emission Control System Pressure Sensor High Input

    Possible causes- Evaporative Emission System (EVAP) Pressure sensor harness is open or shorted
    - Evaporative Emission System (EVAP) Pressure sensor circuit poor electrical connection
    - Faulty Evaporative Emission System (EVAP) Pressure sensor
    - Damaged fuel tank pressure sensor

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    Error code kia PO452


    P0452 KIA - EVAP Emission System- Pressure Sensor Low Input

    Possible causes- Evaporative Emission System (EVAP) Pressure sensor harness is open or shorted
    - Evaporative Emission System (EVAP) Pressure sensor circuit poor electrical connection
    - Faulty Evaporative Emission System (EVAP) Pressure sensor

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    2005 Mercedes C240 has code P0452


    P0452 - Evaporative Emission Control System Pressure Sensor Low Input

    Possible causes- Evaporative Emission System (EVAP) Pressure sensor harness is open or shorted
    - Evaporative Emission System (EVAP) Pressure sensor circuit poor electrical connection
    - Faulty Evaporative Emission System (EVAP) Pressure sensor When is the code detected?An excessively low voltage from the sensor is sent to Engine Control Module (ECM).

    Sep 10, 2012 | 2005 Mercedes-Benz C-Class

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    How to fix a engine code p0453 on a 2000 Kia sephia


    P0453 KIA - EVAP Emission System Pressure Sensor High Input

    There is no one magic bullet fix.
    Here are the poss issues that trigger the code and light.Evaporative Emission System (EVAP) Pressure sensor harness is open or shorted
    - Evaporative Emission System (EVAP) Pressure sensor circuit poor electrical connection
    - Faulty Evaporative Emission System (EVAP) Pressure sensor
    - Damaged fuel tank pressure sensor (same part as above)

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    1 Answer

    Po453 e150 econoline


    P0453 - Evaporative Emission Control System Pressure Sensor High Input
    Possible causes- Evaporative Emission System (EVAP) Pressure sensor harness is open or shorted
    - Evaporative Emission System (EVAP) Pressure sensor circuit poor electrical connection
    - Faulty Evaporative Emission System (EVAP) Pressure sensor
    - Damaged fuel tank pressure sensor

    Sep 05, 2012 | 2007 Ford Explorer Eddie Bauer

    1 Answer

    Could it be that the ecu is wrong


    No it is not Catalytic Converter related. Your fuel tank pressure sensor must be disconnected or the wiring to it defective for the evaporative emission system.
    P0453 HONDA - Fuel Tank Pressure Sensor High Voltagexicon.jpghttp://engine-codes.com/p0453_honda.htmlForum CodePossible causes- Fuel Tank Pressure sensor harness is open or shorted
    - Fuel Tank Pressure sensor circuit poor electrical connection
    - Fuel Tank Pressure Sensor
    - Faulty Engine Control Module (ECM) When is the code detected?A high voltage signal from the fuel tank pressure sensor is sent to Engine Control Module (ECM).
    P0450 - Evaporative Emission Control System Pressure Sensor Malfunctionxicon.jpghttp://engine-codes.com/p0450.htmlForum CodePossible causes- Evaporative Emission System (EVAP) Pressure sensor harness is open or shorted
    - Evaporative Emission System (EVAP) Pressure sensor circuit poor electrical connection
    - Faulty Evaporative Emission System (EVAP) Pressure Sensor
    - Faulty Engine Control Module (ECM) When is the code detected?- An improper voltage signal from EVAP control system pressure sensor is sent to ECM.

    Aug 10, 2012 | 1998 Honda Civic

    1 Answer

    My 99 alero has emission code P0452 how. Can I fix it


    P0452 - Evaporative Emission Control System Pressure Sensor Low Input.
    An excessively low voltage from the sensor is sent to ECM.

    The EVAP control system pressure sensor detects pressure in the purge line. The sensor output voltage to the ECM increases as pressure increases. The EVAP control system pressure sensor is not used to control the engine system. It is used only for on board diagnosis.

    Symptoms
    - Engine Light ON (or Service Engine Soon Warning Light)

    Possible causes
    - The EVAP control system pressure sensor circuit is open or shorted
    - EVAP control system pressure sensor may be faulty

    Possible solution
    - Retight gas cap - Replaced EVAP Control System Pressure Sensor

    Hope this helps.

    Jun 02, 2011 | Oldsmobile Alero Cars & Trucks

    2 Answers

    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

    1 Answer

    Trouble code shows po452 which is the evap


    P0452 Evap.Emission System-Pressure Sensor Low Input

    The evaporative emission control system prevents hydrocarbon vapors from escaping from the fuel tank into the atmosphere where they could form photochemical smog. Gasoline vapors are collected in the charcoal canister. The Fuel Tank Pressure Sensor (FTPS) is an integral part of the evaporative monitoring system. The PCM monitors the FTPS signal to detect vacuum decay and excess vacuum. The FTPS measures the difference between the air pressure inside the fuel tank and outside air pressure to check the purge control solenoid valve operation and for leak detection in the evaporative emission control system by monitoring pressure and vacuum levels in the fuel tank during the purge control solenoid valve operating cycles.

    Feb 12, 2010 | Hyundai Motor 2003 Elantra

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