Question about 2005 Chevrolet Cobalt

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2005 keeps getting emission control v1v solonoid malfuncion

I clear code it just keeps coming back I don't know what else to try I checked all hoses did not find any leaks

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Clearing your so called codes, actually clears all stored data
that you need to diagnose the evap system

Seeing as how that systems monitors only runs every few days,
it will be awhile before a professional can work on it with the
proper test equipment,a scan tool.

You failed apparently to google the evap code, to see the possible
causes of that code being set.

Answer: hook up a scan tool.road test forever, until the evap
monitor runs,check for codes,smoke test the evap system,component test the failed solenoid & replace

Posted on Mar 19, 2014

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1 Answer

Is there 2005 honda civic software update for po128 error code


I think we all just live in a world of automobiles,that have
too much high tech technology,when not so much is needed,
just to keep exhaust emissions at an acceptable level

At least you kept going back to the dealer & not keep driving
as most people do

You gave the dealer techs several chances at resolving the issues,
all be it, expensive, to say the least.

I don't see anything where you went wrong, or they let you down,
assuming your good to go & no more issues

I assume that the head gasket was something that only moved
& leaked internally under certain conditions & I don't know why or
when the ECU came up as a problem,they don't fail often

Jul 31, 2012 | 2005 Honda Civic 1.7i

1 Answer

Evap emission failed what is this


It's an emission control related problem, there is a leak in the fuel vapor recovery system and could be caused by a number of things, the most common are a vapor hose off at the air filter so check the air filter hose connections, it's common for the evap system purge hose to be disconnected from the air filter, next is a gas cap that is not sealeing, try replacing the gas cap with an OEM grade gas cap, then disconnect the negative battery cable for ten seconds, this clears the codes, wait and see if the check engine light comes back on and which codes came back.

Mar 23, 2012 | 2001 Toyota Highlander

1 Answer

Code p0440 code p0441 code p0446on toy echo 2000 what is the diagnosis?


P0440 Evaporative Emission Control System Malfunction P0441 Evaporative Emission Control System Incorrect Purge Flow P0446 Evaporative Emission Control System Vent Control Circuit Malfunction
  • Remove and reinstall the gas cap, clear the code, and drive for a day and see if the codes come back.
  • Inspect the EVAP system for cuts/holes in tubes/hoses
  • Inspect for damaged or disconnected hoses around the Evap purge solenoid
  • Check and/or replace the sensor
  • Check and/or replace the purge valve
  • Have a professional use a smoke machine to detect leaks

Aug 19, 2011 | 2004 Toyota ECHO

1 Answer

PO440 code on a 1999 chev tahoe


P0440 - Evaporative Emission Control System Malfunction
This indicates that a part of the EVAP control system is no longer fuctioning correctly. The EVAP system consists of many parts, including (but not limited to) the gas cap, fuel lines, carbon canister, purge valve, and other hoses. The (EVAP) emission control system prevents the escape of fuel vapors from a vehicle's fuel system. Fuel vapors are routed by hoses to a charcoal canister for storage. Later, when the engine is running a purge control valve opens allowing intake vacuum to siphon the fuel vapors into the engine.

Symptoms: You likely won't notice any drivability problems.

Causes: A code P0440 could mean one or more of the following has happened:
The gas cap is not installed or working properly
The purge solenoid has failed
The canister is plugged and not working properly

Possible Solutions: with a P0440 OBD-II trouble code, diagnosis can be tricky at times. Here are some things to try:
Remove and reinstall the gas cap, clear the code, and drive for a day and see if the codes come back.
Inspect the EVAP system for cuts/holes in tubes/hoses
Inspect for damaged or disconnected hoses around the Evap purge solenoid
Check and/or replace the sensor
Check and/or replace the purge valve
Have a professional use a smoke machine to detect leaks

Check it and keep us updated.

Aug 13, 2011 | 1999 Chevrolet Tahoe

2 Answers

Engine code po455


Check this info about P0455 - Evaporative Emission Control System Leak Detected (no purge flow or large leak)

This indicates a fuel vapor leak or lack of purge flow in the EVAP control system. It means a large leak has been detected. The (EVAP) emission control system prevents the escape of fuel vapors from a vehicle's fuel system. Fuel vapors are routed by hoses to a charcoal canister for storage. Later, when the engine is running a purge control valve opens allowing intake vacuum to siphon the fuel vapors into the engine.

Symptoms: You likely won't notice any drivability problems.

Causes: A code p0455 most likely means one or more of the following has happened:
A loose or improperly affixed gas cap
A non-conforming gas cap (i.e. not factory/original brand)
Other leak or damaged piece in EVAP system

Possible Solutions: With a p0455, the most common repair is to:
Remove and reinstall the gas cap, clear the codes, and drive for a day and see if the codes come back.
Otherwise, replace the gas cap, and/or
Inspect the EVAP system for cuts/holes in tubes/hoses (you may hear a vacuum noise or smell fuel), repair if necessary


Check it and keep us updated.

Apr 22, 2011 | 2004 Chevrolet Silverado 1500 Crew Cab

1 Answer

It is coming up with p440 code


P0440 - Evaporative Emission Control System Malfunction

This indicates that a part of the EVAP control system is no longer fuctioning correctly. The EVAP system consists of many parts, including (but not limited to) the gas cap, fuel lines, carbon canister, purge valve, and other hoses. The (EVAP) emission control system prevents the escape of fuel vapors from a vehicle's fuel system. Fuel vapors are routed by hoses to a charcoal canister for storage. Later, when the engine is running a purge control valve opens allowing intake vacuum to siphon the fuel vapors into the engine.

Symptoms: You likely won't notice any drivability problems.

Causes: A code P0440 could mean one or more of the following has happened:
* The gas cap is not installed or working properly
* The purge solenoid has failed
* The canister is plugged and not working properly

Possible Solutions: With a P0440 OBD-II trouble code, diagnosis can be tricky at times. Here are some things to try:
* Remove and reinstall the gas cap, clear the code, and drive for a day and see if the codes come back.
* Inspect the EVAP system for cuts/holes in tubes/hoses
* Inspect for damaged or disconnected hoses around the Evap purge solenoid
* Check and/or replace the sensor
* Check and/or replace the purge valve
* Have a professional use a smoke machine to detect leaks

Other EVAP DTCs: P0440 - P0441 - P0442 - P0443 - P0446 - P0453 - P0455 - P0456

Keep us updated and remember to rate this answer..

Feb 01, 2011 | Chevrolet Venture Cars & Trucks

2 Answers

I have replaced my mass airflow system just replacedvthe fuel pressure regulator and way to many other parts to remember. there is a code that keeps coming up when i check it at autozone. the code is p0453...


Yes a common GM problem. The fuel tank pressure sensor is malfunctioning. You will have to lower the fuel tank down and you will see a black square device like 1" X1" square. It is held in by a rubber fitting you have to pry it out after disconnecting the wire plug. Make sure you put a little wd-40 on the rubber and sensor when you reinstall it or you may damage the gasket causing the system to leak. Then plug in the electrical plug and put the tank back in place. After a drive cycle is completed the code should clear itself or you can clear the code with a scanner and see if it comes back. Now if it does come back check every connection and hose to the vent canister to see iff there is a bad connector, rubbed thru hose or loose connection. But the connections usually will not give low and high readings if bad just low reading. Hope tghat helps you along, Thanks for asking Fixya.com

Nov 21, 2010 | 2001 GMC Jimmy

3 Answers

Check engine light came on, says its a evaporative emission system, code# P0440, what is that?


What does that mean?
This indicates that a part of the EVAP control system is no longer fuctioning correctly. The EVAP system consists of many parts, including (but not limited to) the gas cap, fuel lines, carbon canister, purge valve, and other hoses. The (EVAP) emission control system prevents the escape of fuel vapors from a vehicle's fuel system. Fuel vapors are routed by hoses to a charcoal canister for storage. Later, when the engine is running a purge control valve opens allowing intake vacuum to siphon the fuel vapors into the engine.

Possible Causes:
A code P0440 could mean one or more of the following has happened:
  • The gas cap is not installed or working properly
  • The purge solenoid has failed
  • The canister is plugged and not working properly
Possible solutions:
With a P0440 OBD-II trouble code, diagnosis can be tricky at times. Here are some things to try:
  • Remove and reinstall the gas cap, clear the code, and drive for a day and see if the codes come back.
  • Inspect the EVAP system for cuts/holes in tubes/hoses
  • Inspect for damaged or disconnected hoses around the Evap purge solenoid
  • Check and/or replace the sensor
  • Check and/or replace the purge valve
  • Have a professional use a smoke machine to detect leaks
HTH,

Mike...

Dec 04, 2009 | 1996 Chevrolet Cavalier

1 Answer

2002 Cavalier error code 440 and 452 What do they mean?


This indicates that a part of the Evap control system  is no longer functioning correctly. The Evap system consists of many parts, including (but not limited to) the Gas Cap, fuel lines, carbon canister, purge valve, and other hoses. The (EVAP) emission control system prevents the escape of fuel vapors from a cars fuel system. Fuel vapors are routed by hoses to a charcoal canister for storage. Later, when the engine is running a purge control valve opens allowing intake vacuum to siphon the fuel vapors into the engine.
A code P0440 could mean one or more of the following has happened:
The gas cap is not installed or working properly
The purge solenoid has failed
The canister is plugged and not working properly
TRY this first: Remove and reinstall the gas cap or replace, clear the code, and drive for a day and see if the codes come back.
Inspect the Evap system for cuts/holes in tubes/hoses
Inspect for damaged or disconnected hoses around the Evap purge solenoid
Check and/or replace the sensor
Check and/or replace the purge valve

P0452 Evaporative Emission Control System Pressure Sensor Low Input

Good luck and hope this helps. Recap star with the simple and replace the gas cap with a dealer OEM not a after market. If that does not fix it then change the sensor as indicated with the P0452 code. You can get the sensor from Auto Zone and they can give yo the step by step instruction to get the job done. Good luck and keep me posted. 

Jun 14, 2009 | 2002 Chevrolet Cavalier Coupe

2 Answers

01 sonata gls v6...code po455, po442. what are these and how can I pass emissions test in arizona


If you have an EVAP leak, you will get the following codes:

1. P0442 evap emission control system leak (small).
2. P0455 evap emission control system leak (large).

If these codes come up, you need to trace the leak. The most common place for the systems to leak besides the gas cap is at the service port under the hood, the hoses at the purge solenoid, and the hoses around the fuel tank. Check all your EVAP hoses from under the hood , all the way back to the gas tank. You can repair a split hose easily. Buy some 14.5mm EVAP hose at the auto parts store. Just cut the split or cracked section out and attach the new hose.

I can only say that u must fix the code issue and light to pass state emission test, if u reset the light they will know, the system will tell the tester that the system is not ready, this will cause a fail.

Mar 16, 2009 | 2001 Hyundai Sonata

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