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Service engine soon light is on in my 1997 ford escort. Autozone tested it, and code p1443 came up. EVAP canister purge valve fault. what does this mean, and is it costly to repair?

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    test ford evaporator canister purge valve

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    engine service soon light and over drive light blinking transmission not engaging properly

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    Stalling out check engine light

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How's that gas cap doing? It's part of the canister circuit and Will cause this code if the seal is leaking...accordianman

Posted on Jul 28, 2008

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Two codes


code p1443 - Evap canister purge system mafunction.possible cause faulty Evap canister purge valve.fuel vapor hose blocked between Evap purge valve and the FTP sensor or blocked between purge valve and intake manifold or vacuum hose blocked between purge valve and intake manifold.code po430 catalytic system efficiency bank 2 below threshold.possible causes. air leaks at the exhaust manifold or in the exhaust pipes. catalytic converter is damaged.ECT OR CHT SENSOR has lost its calibration.engine cylinders misfiring or the ignition timing off.engine oil is contaminated.front HO2S or rear HO2S is contaminated with fuel or moisture.both front HO2S OR REAR HO2S is loose in mounted hole. fuel pressure is too high due to faulty fuel pressure regulator.

Jan 02, 2013 | 1996 Ford Thunderbird LX

1 Answer

What does Evap pressure sensor failure means. ihave 97 ford escort, 94,000 miles


Hi Vanessa,

Diagnostic Test Code (DTC) P1443 has a "generic" description of "Very Small Or No Purge Flow Condition"
To put it very simply, the Powertrain Control Mdule (PCM) is commanding the Canister Purge (CANP) solenoid to open and purge the fuel vapors from your charcoal canister and fuel tank. Then it "looks" at data from the Purge Flow (PF) sensor to see if if the CANP solenoid complied with its command. This is not occuring as it should. (see the picture below to see how all these parts work together)

Here is a list of the possible causes of this code:
> Leaks in fuel tank, filler cap or vapor hoses
> Wiring harness circuits (CANP SIG, PF, PWR GND, VMV and VPWR)
> Faulty Canister Purge (CANP) solenoid
> Faulty Purge Flow (PF) sensor
> Faulty Vapor Management Valve (VMV)
> Faulty carbon canister
> Faulty PCM
The system must be diagnosed to find out which parts of the system are functioning correctly and which are not, so the fault can be found. The computer only knows that the data from the PF sensor is not what it should be - it does not know WHY.


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Nov 01, 2011 | 1997 Ford Escort

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

P1443 code How do I fix this code problem on my 97 Ford ranger?


P1443 is the Evaporative Emission Control System Control Valve. Any time you get this code always check your gas cap. If it is not installed all the way, or leaks, it can cause the evap emission code to come up. If the cap is okay...

The problem is probably caused by the Canister Purge Assembly. This assembly connects the intake manifold to the charcoal canister and the assembly is made up of hoses, a valve and a sensor. On the 1997 Ranger, 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.

Part numbers for the canister purge solenoid/flow sensor assemblies:

F57Z-9C987-AB Canister Purge Solenoid/Flow Sensor
Assembly - 2.3L F57Z-9C987-CA Canister Purge Solenoid/Flow Sensor
Assembly - 3.0L F57Z-9C87-BA Canister Purge Solenoid/Flow Sensor
Assembly - 4.0L

Part cost = $65 to $100 depending on engine size - good luck :O)

Feb 17, 2011 | Ford Ranger Cars & Trucks

2 Answers

Ford escort wagon 1997 code p1443 displayed. what does this indicate & where is the cannister? thank you.


P1443 - EVAP Control System / Vacuum System Purge Control Solenoid Or Purge Control Valve Fault. A fuel tank pressure change greater than minus (-) 7 inches of water in 30 seconds occurred with a purge (fuel vapor) flow at less than 0.02 pounds per minute.

Possible Causes:
  • Blocked fuel vapor hose between the EVAP canister purge valve and the FTP sensor.
  • Blocked fuel vapor hose between the EVAP canister purge valve and the engine intake manifold.
  • Blocked vacuum hose between the EVAP canister purge valve solenoid and the engine intake manifold.
  • EVAP canister purge valve stuck closed (mechanically).

  • Possible Solution:
    Check for blockages between the fuel tank, the EVAP canister purge valve, and the engine intake manifold. Check for obstructions in the EVAP canister purge valve diaphragm and ports.

    The canister is on the passengers side near the firewall if I recall correctly.

    Jan 18, 2011 | Ford Escort Cars & Trucks

    2 Answers

    P 2138 code with service engine soon light on?


    Accelerator Pedal Position Error.

    P2138 - Accelerator Pedal Position Sensor Circuit Range / Performance Problem

    Clear the code - if it recurs, change the sensor.


    Thanks for using FixYa - a 4 THUMBS rating is appreciated for answering your FREE question.

    Sep 15, 2010 | 2006 Nissan Altima

    2 Answers

    P1443 computer code what is it on my 1996 ford thunderbird


    P1443 = A problem with the EVAP purge flow system
    Continuous Memory Diagnostic Trouble Code (DTC) P1443 indicates an incorrect Evaporative System Purge Control Valve flow.

    Possible causes:
    -- Obstructed, open or cracked hoses between EVAP canister purge valve and intake manifold.
    -- Damaged EVAP canister purge valve.
    -- Damaged PF sensor.

    Hope help with this.

    Apr 25, 2010 | 1996 Ford Thunderbird LX

    2 Answers

    1996 Ranger-code P1443-"auxillary emmisions controls" is the decription that I got from Advance Auto Parts diagnostic--What can the problem be?


    the Canister Purge Assembly. 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.

    Oct 05, 2009 | 1997 Ford Ranger SuperCab

    1 Answer

    1995 Ford Ranger ( engine light ) and stuff need help plz


    if your obd2 scanner fits the connection you have obd2, obd1 connector is way differnt.

    your code p1443
    Control System
    Canister Purge
    Valve (Mechanical)
    Malfunction
    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.
    l Pinched, blocked or
    plugged fuel vapor
    tubes/hoses (except
    between fuel tank and
    EVAP canister)
    l Damaged EVAP
    canister
    l Disconnected, cracked
    or cut fuel vapor
    tubes/hoses (except
    between fuel tank and
    EVAP canister)
    l Damaged EVAP
    canister purge valve
    Check for audible vacuum
    noise in the engine
    compartment or significant
    fuel odor in the engine
    compartment or near the
    EVAP canister.

    This link has all the codes you need.
    http://rockledge.home.comcast.net/~rockledge/RangerPictureGallery/DTCs.pdf

    Jul 17, 2008 | 1995 Ford Ranger Supercab

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