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Diagnostic code P1451 - Taurus Ford Cars & Trucks

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  • kcarmstrong Feb 01, 2009

    I have a 2001 ford escape 3.0 L and the P1451 code keeps coming up. The truck runs fine, but I would like to fix it.

  • Anonymous Apr 14, 2009

    2004 ford escape battery indicator light won't come off but charging is ok

  • Anonymous Mar 21, 2014

    Code1451 come up on diagnostic test and engine light comes on


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P1451 EVAP Control System Canister Vent Solenoid Circuit Malfunction

Posted on Jul 24, 2008

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SOURCE: What does:

Technical Description:
EVAP Control System Canister Vent Solenoid Circuit Malfunction
The EVAP system monitors the canister vent (CV) solenoid circuit for an electrical failure.
The test fails when the signal moves outside the minimum or maximum allowable calibrated parameters for a specified canister vent duty cycle by PCM command.
Symptoms: You will likely not notice any drivability problems.
Causes: A code P1451 may mean that one or more of the following has happened:
*VPWR circuit open
*Damaged canister vent solenoid
*Canister vent solenoid circuit open or shorted to ground, power, etc.
*Damaged Powertrain Control Module (PCM)
*Possible SolutionsVerify canister vent solenoid - To verify normal functioning, monitor the EVAP canister vent solenoid signal PID EVAPCV and the signal voltage
(PCM control side).With the valve open, EVAPCV indicates 0% duty cycle and a voltage approximately equal to battery voltage.
When the valve is commanded fully closed, EVAPCV indicates 100% duty cycle, and a minimum voltage drop of 4 volts is normal.
Output test mode may be used to switch output on/off to verify function.
*Replace canister vent solenoid

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Posted on Sep 29, 2010

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Code p1451 de mustan 2000

P1451--Evap Control System Canister Vent Solenoid
Circuit Malfunction

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Code p1451

Code P1451 is a EVAP control system canister vent solenoid circuit malfunction. If you're lucky it's just a bad gas cap but chances are the solenoid is bad or the wires leading to it are damaged or broken (more likely). Check the attached diagram for the canister location and have a look. If it's just damaged wires you can soldier a new wire splice in place and shrink tube it for protection. Make sure it's not going to rub against any metal that will damage it again. ec8c492f-73cf-4d32-ad19-4b1ac9f652f5.gif

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Scan code p1451

A code P1451 may mean that one or more of the following has happened:

  • VPWR circuit open
  • Damaged canister vent solenoid
  • Canister vent solenoid circuit open or shorted to ground, power, etc.
  • Damaged Powertrain Control Module (PCM)

(From Chinasinoy--Professional car diagnostic)

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1 Answer

Service code 2002 ford escort 2.0 engine.p1451

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What is the code P1451 solution? Runs great, codes P1451, P0171 and P0174 are coming up and the engine light is on. Car needs to get inspected but codes need to be fixed.

P0171 - System too Lean (Bank 1)
P0174 - System too Lean (Bank 2)
P1451 - EVAP Control System Canister Vent Solenoid Circuit Malfunction
I'm afraid I don't have enough info to tell you how to fix the P1451 but I'm certain it's the cause of the other two codes.

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P0503 p1451 codes

do it step by step
1- change vss sensor and recheck
2- check wiring of vss sensor
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