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I have a 2000 grand Prix GTP getting the code P0449 EVAP vent solenoid circuit malfunction I have tested the vent solenoid and it works properly I replaced the gas cap I checked for voltage at the plug on the pink wire with the key on and I do have power So my question would be is that indicating the PCM is not grounding the solenoid when its supposed to be meaning the PCM is bad

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Code po449 evap solenoid


What about it ? What would you like to know ? Where is it , what is it ? What engine does yours have , six different possibilities .
DTC P0449: Evaporative Emission (EVAP) Vent Solenoid Control Circuit.
Battery voltage is supplied to the EVAP canister solenoid valve. The ECM grounds the EVAP canister vent solenoid valve control circuit through an internal switch called a driver. The ECM monitors the status of the driver. A scan tool will display the commanded state of the EVAP canister vent solenoid valve as ON or OFF. P0449 Vent Valve Testing EVAP Systems

Mar 10, 2016 | 2008 Chevrolet Trailblazer

1 Answer

Where is the purge valve solonoid for a 2000 chevy cavalier?


How do I test a purge solenoid? / Diagnosing an EVAP ...

www.ericthecarguy.com/.../13335-how-do-i-test-a-purge-solenoid-diagn...
My brothers 2000 Chevy Cavalier has a P0440 code. ... the PCM will test the circuit condition of the purge valve solenoid and vent valve solenoid so with the key ...

P0446 2000 chevy S10 4WD Replacing EVAP Vent Valve ...

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code .P0446. ... Chevy Truck Hard To Fill Gas Tank - GM EVAP Codes P0442, P0446, P0455 or P0449 ...

EVAP Purge Solenoid Removal - YouTube

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EVAP Purge Solenoid Removal Saturn S-series. ... Hi, is thispurge can solenoid in the same location for ...

Dec 19, 2015 | 2000 Chevrolet Chevrolet Cavalier Base

1 Answer

Im getting the P0449 code even after testing and putting on a new vent valve solenod.


Now you see that you have to test a system
to find a problem,not install parts based on codes
or their names

Have a shop smoke test the Evap System & find a problem

PO449-Evap System Vent Valve/Solenoid
CIRCUIT MALFUNCTION

Need to use the internet better to gather your info
& never replace a part until you learn how it works
& what is does in a system

No testing-leave the hood closed

Aug 24, 2014 | Cars & Trucks

1 Answer

Code p0449 vent solenoid intermittent


EOBD II Error Code: P0449
Fault:
Evaporative Emission (EVAP) System, Vent Valve - Circuit Malfunction
Possible Cause:
Wiring harness.
Evaporative emission (EVAP) canister purge valve.
Engine control module (ECM).

Dec 28, 2013 | 2001 Pontiac Montana

1 Answer

I replaced evap vent solenoid & dtc came back


Here is the definition of the code and possible causes.

P0449 PONTIAC Description The Engine Control Module (ECM) monitors the Evaporative Emission System (EVAP) Vent Valve/Solenoid system wiring for opens or shorts.

When is the code detected?The Engine Control Module (ECM) has determined that a malfunction exists in the electrical circuit for the vent valve/solenoid in the evaporative emission control system.

Possible causes - Vacuum leaks, damaged hoses or improper routing
- EVAP system - Check fuel cap, canister, valves or components
- Faulty purge or vent solenoids
- Check connector and wiring
- Fuel saturated vapor canister
- Failed EVAP vent solenoid
Read more: http://engine-codes.com/p0449_pontiac.html#ixzz2M1YJd7DU

Feb 26, 2013 | 2002 Pontiac Grand Prix

1 Answer

I have a code P0449 on my 1999 chevy malibu 3.1


check engine light ison,autozone says code is P0449 this is whattheir ticket says:

The PCM has determined that a malfunction exists in the electrical circuit for the vent valve/solenoid in the evaporative emission control system.

Definition:
EVAP (Evaporative Emission System) purge/vent solenoid circuit condition

Explanation:
The solenoids and system wiring are monitored for opens or shorts

Probable Causes
1- Purge or vent solenoids defective
2- Check connevtor and wiring
3- Fuel saturated vapor canister
4- Failed EVAP vent solenoid

Dec 06, 2012 | 1999 Chevrolet Malibu

1 Answer

What code is p0449


The PCM has determined that a malfunction exists in the electrical circuit for the vent valve/solenoid in the evaporative emission control system.

Definition:
EVAP (Evaporative Emission System) purge/vent solenoid circuit condition

Explanation:
The solenoids and system wiring are monitored for opens or shorts

Probable Causes
1- Purge or vent solenoids defective
2- Check connevtor and wiring
3- Fuel saturated vapor canister
4- Failed EVAP vent solenoid

Jan 08, 2012 | Chevrolet Cobalt Cars & Trucks

1 Answer

How do you repair P0446 trouble code on a 2000 pontiac grand prix gtp?


P0446 - Evaporative Emmission Control System Vent Control Circuit
Evap vent valve has only one purpose. It closes in order to seal the vent so the EVAP system can pressurize and ensure there are no leaks. Evap vent valve is usually supplied Batt. voltage with key on. The ECM's driver controls the ground, and when grounded, activates the valve (closing it). If the ECM detects a short to ground, and open,or a short to battery voltage on the control circuit, P0446 will set. Code also may refer to ECM detecting that EVAP system is unable to achieve or maintain vacuum during test.

Symptoms: There will be no obvious symptoms to driver, other than MIL illumination.

Causes: A code P0446 could mean one or more of the following has happened:
* Faulty vent valve
* Open, short or excessive resistance on Vent valve control circuit
* Blockage of vent valve
* Bad PCM

Possible Solutions: With a P0446 OBD-II trouble code, here are some things to try:
* Replace Vent valve
* Repair open, short, or resistance problem in control circuit
* Repair open, or short, or resistance problem in power circuit
* Replace PCM


Review this information, Test it and tell us news.

Feb 15, 2011 | 2000 Pontiac Grand Prix

2 Answers

I HAVEA 2006 CHEVERLET SUBURBAN 1500, AND THE CHECK ENGINR LIGHT STEAYS ON. THE CODE IS P0449; WHAT IS THIS AND WHERE IS IT LOCATED AT.


Hello. Your code indicates that your emission system is acting up. If you live in California, you might have a problem passing the next mandatory emmissions test. The PCM has determined that a malfunction exists in the electrical circuit for the vent valve/solenoid in the evaporative emission control system.

Definition:
EVAP (Evaporative Emission System) purge/vent solenoid circuit condition

Explanation:
The solenoids and system wiring are monitored for opens or shorts

Probable Causes
1- Purge or vent solenoids defective
2- Check connector and wiring
3- fuel, saturated vapor canister
4- Failed EVAP vent solenoid

Apr 08, 2010 | Chevrolet Suburban 1500 Cars & Trucks

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