Question about 1999 Chevrolet Suburban

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Evaporative emissions control system pressure sensor 99' suburban

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Hello, You have an emission sytem problem . The actual sensor is on top of the fuel tank that lets the system know how much air pressure is on the system, its made in the fuel pump module, but if your system has a po440 code do not waste your time replacing it. You (99 percent sure) will have a canister and vent valve. They will cost about 150 dollars to replace. Please rate my answer. Thank You.

Posted on Feb 23, 2009

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Will this FTP sensor make your vehilce run rough/hesitate?

Posted on Jan 07, 2012

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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

    6ya6ya
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    1 Answer

    Diagnostic code p0701


    P0453 means EVAP emission pressure sensor high input. Possible causes:
    - Faulty Evaporative Emission System (EVAP) Pressure sensor
    - Evaporative Emission System (EVAP) Pressure sensor harness is open or shorted
    - Evaporative Emission System (EVAP) Pressure sensor circuit poor electrical connection.
    Code p0701 means Transmission control system range/performance. Possible causes:
    - Open or short transmission control system circuit
    - Poor transmission control system electrical connection
    - Check powers and grounds to Transmission Control Module (TCM)

    Aug 27, 2013 | Cars & Trucks

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    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

    Oct 11, 2012 | Cars & Trucks

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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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    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

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    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

    1999 GMC SUBURBAN WONT PASS EMISSIONS HAS CHECKENGINE CODE PO452


    your code PO452 comes up............Evaporative emission control system, pressure sensor low imput.

    Aug 30, 2011 | 2000 Chevrolet Blazer

    2 Answers

    I have a service engine soon light on in my pontiac grand am its a 99 and the code is PO453 what could that be?


    That code is for evap control pressure high. This indicates a possible faulty fps sensor. "Fuel pressure sensor"

    Aug 26, 2011 | Pontiac Grand Am Cars & Trucks

    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

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