Question about 1998 Ford Windstar

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I have 1998 ford windstar. code came up p1451 evaporative emission system vent control circuit. how would you fix it. or is it a major problem

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Easy fix
Most likely the Solenoid Operated
Vent Valve on the EVAP Canister

You could do yourself,I don't know if
the canister is in the engine compartment
or under the back near the fuel tank

Your best to go to a local repair shop
so they can use a scan tool,smoke
machine etc

Posted on Mar 11, 2011

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My lincon mark 94 no pass esmog check high emission

Posted on Apr 17, 2011

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P1451 obd code on 2002 ford windstar


Here is the definition of the code.
Could be a faulty gas cap, a leak in the evap venting system, a wiring problem, or a faulty vent solenoid. Something caused the system to fail a pressure test.

P1451 FORD Description The Engine Control Module (ECM) detected the canister vent solenoid signal moved outside the calibrated parameters at a specific duty cycle.
Read more: http://engine-codes.com/p1451_ford.html#ixzz27jBna9sq

Sep 26, 2012 | 2003 Ford Windstar

1 Answer

Error code p1451 on ford windstar 2002


the meanning of P1451 is Evap Emission Control Sys Vent Control Valve Circuit

OBD2 code reader

Aug 22, 2012 | Ford Windstar Cars & Trucks

1 Answer

What does a p1451 Manufacturer specific code mean?


P1451 FORD - EVAP (Part of the fuel vapor emission control system) Control System Canister Vent Solenoid Circuit Malfunction.The Purge control vent valve is located on the carbon cannister tray near the gas tank in rear of the truck, it is either damaged or has stopped working.

Aug 17, 2011 | Ford Explorer Cars & Trucks

1 Answer

I have a emission malfuction code p1451 in a ford f150 4.6 V8 1999 triton automatic 135,000 miles. what can be the problem?


P1451--Evap Control System Canister Vent Solenoid
Circuit Malfunction

Your best to have it diagnosed with a scan tool

If your into throwing parts at it,change the solenoid

Mar 02, 2011 | 1999 Ford F150 Regular Cab

2 Answers

Check enegine light stay s on all the time, here are the codes im getting, if someone could tell me how to fix these that would be great. p0155 p0141 p0136 p0443 p1451 p0135 p0161 p1409


P0155: O2 Sensor heater Circuit Malfunction (bank2 ) Sensor 1.

P0141: O2 Sensor heater Circuit Malfunction (bank1 ) Sensor 2.

P0135: O2 Sensor heater Circuit Malfunction (bank1,Sensor1)

P0136: O2 Sensor Circuit Low voltage (bank1) Sensor 2.

P0443 : Evaporative Emission control System Purge control valve.

P1451: Eavporative Control System Canister vent solenoid Circuit Malfunction.

P0161: O2 Sensor Circuit Low voltage (bank2,Sensor2)

P1409: Electronic Vacuum Regulator (EVR) control circuit malfunction.

change the O2 sensors first,Then check the the EGR Vacuum regulator for any Malfunction. Good luck

Jan 14, 2011 | Ford Mustang Cars & Trucks

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

P1451 Code on Mercury Cougar. How do I fix it


Here is the information that you need:

NOTE
Enter this Pinpoint Test only when directed here.

The use of a soap solution, such as SNOOP, around the fuel filler cap or the use of the hydrocarbon emission analyzer to determine an evaporative emission system leak is not recommended. The mandatory Rotunda Evaporative Emission System Leak Tester for OBD II (including the ultra-sonic tester) is the only device to be used at this time for evaporative emission system leak detection.

This Pinpoint Test is intended to diagnose the following:
Evaporative Emission (EVAP) Monitor System

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Sep 26, 2009 | 2000 Mercury Cougar

1 Answer

Explorer, 2000; 4.0 EFI: Engine runs fine in neutral & responds well when accelerator is depressed; shift to reverse or drive & engine runs very rough....with no power whatsoever. Scanned...


P1747 * EPC, wiring, PCM EPC solenoid circuit failure, shorted circuit or output driver Voltage through EPC solenoid is checked. An error will be noted if tolerance is exceeded. Short circuit causes minimum EPC pressure (minimum capacity) and limits engine torque (alternate firm). Go To Pinpoint Test
The EPC solenoid is shorted or the electrical circuit (wiring) or the transistor (driver) inside the computer is fried. do you know how to test a computer controlled circuit ?
How to test computer transistor driver without scan tool

Do you know how to find the circuit in question ?

And you are correct about these two codes as being not related . Do you know what evaporative emission system is ?


Wells EVAP Training with Sgt Tech P0440 P0441 P0442 etc

The Evaporative Emission Control System (EVAP) is used to prevent gasoline vapors from escaping into the atmosphere from the fuel tank and fuel system. The EVAP system usually requires no maintenance, but faults can turn on the Check Engine light and prevent a vehicle from passing an OBD II plug-in emissions test.
EVAP Evaporative Emission Control System - AA1Car.com
http://www.bbbind.com/free_tsb.html you can find free wiring diagrams here . Do you know how to use a wiring diagram ?

P1451 - EVAP Control System Canister Vent Solenoid Circuit Malfunction 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.
  • VPWR circuit open
  • CV solenoid circuit shorted to PWR GND or CHASSIS GND
  • Damaged CV solenoid
  • CV solenoid circuit open
  • CV solenoid circuit shorted to VPWR
  • Damaged PCM
To verify normal function, monitor the EVAP canister vent solenoid signal PID EVAPCV and the signal voltage (PCM control side). With the valve open, EVAPCV will indicate 0% duty cycle and the voltage approximately equal to battery voltage. When the valve is commanded fully closed, EVAPCV will indicate 100% duty cycle and a voltage drop of 4 volts minimum is normal. Output test mode may be used to switch output ON/OFF to verify function. This is another electrical circuit problem .
Do you know how to use a DVOM - digital volt ohm meter ?
Do you know that P1747 (electronic press control solenoid short circuit) Is a transmission problem . This solenoid controls the fluid pressure .

May 10, 2017 | Ford Explorer Cars & Trucks

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