Question about 2001 Chevrolet Malibu

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I have a code set and it is the evaporative control . What copuld be the probem with it? Is there a solenoid typ control that went bad?

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Without having all the info it is hard to figure out.But if that was the code and what it said I would locate the vent vave for the evap system and replace it.It is usually located on or near the charcoal canister which should be under the rear of the car.It will be attached to it directly or by a plastic tube/hose.Locate the vent vavle and repalce it,then unplug your battery for 30 seconds to reset the engine light.

Posted on Jan 31, 2010


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Toyota echo won't start code 440 441 446

Error Code: P0440
Fault Location:
Evaporative Emission (EVAP) System - Malfunction
Possible Cause:
Malfunction Indicator Lamp (MIL) active.
Check Evaporative Emission (EVAP) System Sealing.
Check Evaporative Emission (EVAP) Canister Purge Regulator Valve .
Check Evaporative Emission (EVAP) Canister Purge Solenoid Valve .

Error Code: P0441
Fault Location:
Evaporative Emission (EVAP) System - Incorrect Flow Detected
Possible Solutions:
Check Evaporative Emission (EVAP) Canister Purge Regulator Valve .
Perform Output Test.
Check Evaporative Emission (EVAP) Canister Purge Solenoid Valve .
Check Evaporative Emission (EVAP) Canister.
Perform Basic Setting.
Check Pipes between Tank Breathing and Throttle Body.

Error Code: P0446
Fault Location:
Evaporative Emission (EVAP) System, Vent Control - Circuit Malfunction
Possible Cause:
Wiring harness.
Evaporative emission (EVAP) canister purge valve.
Engine control module (ECM).

Feb 25, 2013 | 2002 Toyota ECHO

1 Answer

Codes 446 and 452

P0446 has nothing to do with the canistor !
DTC P0446 Evaporative Emission (EVAP) Vent System Performance
This DTC tests the evaporative emission (EVAP) system for a restricted or blocked EVAP vent path. The control module commands the EVAP canister purge solenoid valve Open and the EVAP canister vent solenoid valve Closed. This allows vacuum to be applied to the EVAP system. Once a calibrated vacuum level has been reached, the control module commands the EVAP canister purge solenoid valve Closed and the EVAP canister vent solenoid valve Open. The control module monitors the fuel tank pressure (FTP) sensor for a decrease in vacuum. If the vacuum does not decrease to near 0 inches H2O in a calibrated time, this DTC sets.
DTC P0452 Fuel Tank Pressure (FTP) Sensor Circuit Low Voltage

How to troubleshoot an EVAP Pressure Sensor problem P0452 GM

EVAP Vent Solenoid Code P0446 The solenoid is stuck open !

Apr 23, 2017 | 2005 Chevrolet Silverado 1500HD

1 Answer


evaporative emissions control system vent valve/solenoid circuit malfunction under the truck on the passenger side[easier access to unit ]on rear cross rail behind the gas tank is the vent valve solenoid canister [small round one ]this attaches to the larger evap canister by a hose this unit is one piece check hose and connections road debris may have damaged line wiring or connection or valve solenoid went bad

Jun 28, 2011 | 2006 Chevrolet Colorado

2 Answers

Check engine light code p1676 Chevy lumina Ltz

Trouble Code: P1676 (3.8L V6 VIN K Auto)
Evaporative Emission (EVAP) Purge Solenoid

Number of Trips to Set Code: 1
OBD II Monitor Type: CCM Details
Indicators: MIL Details
Trouble Code Conditions:
Conditions for Setting the DTC.
  • The ignition is on.
  • An improper voltage level has been detected on the output circuit which controls the EVAP purge solenoid.
  • The above conditions are present for at least 30 seconds.

Possible Causes:
  • Poor connection at the PCM. Inspect harness connectors for backed out terminals, improper mating, broken locks, improperly formed or damaged terminals, and poor terminal to wire connection.
  • Damaged harness.
  • Inspect the wiring harness for damage. If the harness appears to be OK, disconnect the PCM, turn the ignition on and observe a voltmeter connected between the EVAP purge solenoid control circuit and ground at the PCM harness connector while moving connectors and wiring harnesses related to the EVAP purge solenoid. A change in voltage will indicate the location of the malfunction.

1998 Chevrolet Lumina - Powertrain - Engine Controls - 3.8L - DTC P1676 Evaporative Emission (EVAP) Purge Solenoid Control Circuit

Aug 13, 2010 | 1998 Chevrolet Lumina

2 Answers

Emission test coe PO455

The missing ABS fuse will not set this code as ABS is not part of the emissions system. This code is caused by a leak in the EVAP system. Replacing the fuel cap is probably the cheapest solution if you're lucky. Very rarely will the cap be bad. You'll need to check the entire EVAP system for leaks, loose connections, bad hoses etc. The main problem that will trip this code is the EVAP control solenoid. If after checking the system you find no bad hoses or other obvious leaks you'll need to replace the EVAP solenoid.

The solenoid is located under the car behind the fuel tank on the rear cross member. It looks like a little black boc with an electrical connector and two hoses coming from it. Good luck.

Jun 07, 2010 | 2006 Suzuki Forenza

3 Answers

Code 449? what is this,anyone. tks

Code po449 is for bad  solenoid vent valve.After replacing the valve  check for the   12 volts at the "pink" wire.
This error relates too 

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

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

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.


The cost of the vent solenoid valve is near to 30 bucks. And the valve is located near the gas tank.

Thanks. you can rate this solution and show your appreciation.

May 20, 2010 | 2005 Chevrolet Silverado

1 Answer

I scann my car 2005 corollathe code came p0441and p0445 what does it mean engine light blinking

p0441: Evaporative Emission Control System Incorrect Purge Flow;
A code P0441 could mean one or more of the following has happened:

Bad vacuum switch
  • Broken or damaged EVAP line or canister
  • Open in PCM purge command circuit
  • Open or short in Voltage feed circuit to Purge Solenoid
  • Faulty purge solenoid
  • Restriction in EVAP solenoid, line or canister
  • Corrosion or resistance in purge connector
  • Bad PCM

p0445: Evaporative Emission Control System Purge Control Valve Circuit Shorted
(This also came up already above)

Nov 30, 2009 | 2005 Toyota Corolla

2 Answers

Check Engine Light

Code P0442 means Evaporative Emission Control System Leak Detected-(small leak). Most times that code is set if you removed the gas cap while the engine was running. If not, you could have a bad gas cap. It's minor in the grand scheme of things, but to be on the safe side, replace the gas cap, have the code cleared, and drive the car for a day or two. If the light stays off, problem solved.

Aug 15, 2009 | 2003 Kia Spectra

2 Answers

Error code p0449

i have code reader says p0449 is evaporative emission control system - vent valve / solenoid circuit

Apr 26, 2009 | 2006 Chevrolet Tahoe

3 Answers

2003 Chevy Silverado 1500 Error Codes

P0135 is a bad 02 sensor
P0442 is a evap problem
P0449 is a vent solenoid

i would check the vent solenoid first its a 4ws fuse under the hood in the fuse box make sure you have power to it you should have power at all times the ground comes from the pcm i think if you fix this everything else will work they are all computer controled

Mar 23, 2009 | 2003 Chevrolet Silverado 1500

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