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06 cobalt LS, 2.2L ecotec. What should I like at to fix this code? I heard gas cap or the evap purge selenoid.

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  • Jeremy W.
    Jeremy W. Sep 28, 2010

    What code?

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Posted on Jan 02, 2017

  • 4 Answers

SOURCE: 2002 monte carlo EVAP problem continues.

did you try a vent solenoid? this is located behind left rear wheel in fender.

Posted on Nov 07, 2008

  • 1 Answer

SOURCE: check engine soon light. diagnosed as troble shooting codepo44

Change the evap vent solenoid canister located near the master cylinder on the right side of the engine or your hoses may be cracked. Good luck!

Posted on Mar 12, 2009

  • 160 Answers

SOURCE: 2006 saturn ion 2.2L engine code came up for EVAP purge/vent

replace your pvc vavle then have your cars underbody washed

Posted on Mar 15, 2009

  • 20 Answers

SOURCE: Describe your EVAP Purge Solenoid Circuit Fault

Try going to http://www.ls2.com/boggs/dtcs/DTC%20P0443.htm

Posted on Nov 08, 2009

  • 1 Answer

SOURCE: HAVE A TROUBLESHOOTING MESSAGE PO446

Evaporative Emission (EVAP) how to find a leak without replacing canister on chevy silverado 1500

Posted on Jan 18, 2010

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1 Answer

06 Hyundai Elantra two codes one is a p0441 purge fault code and other is evap large leak I can't figure out how to pass do i need to replace the purge valve


the large leak could be a loose tank cap
code p 0441 refers to evaporative emission (EVAP) system--incorrect flow detected === causes ---hose /connection/s,-- intake leak--EVAP canister purge valve
probably need to replace the valve but test first for the large leak or cap loose fault as it may fix both

Apr 09, 2016 | Hyundai Cars & Trucks

1 Answer

My 06 cobalt has these codes can anyone tell me what they mean? Are they an expensive fix? p0446,p0455, p0172


code p0446 refers to evaporative emission (EVAP) system-vent control-circuit malfunction===causes --wiring--EVAP canister purge valve--ECM
code p0455 refers to EVAP system-large leak detected===causes --hose connections--intake leak--EVAP canister---EVap canister purge valve
code p0172 refers to system too rich, bank 1===causes intake blocked---EVAP canister purge valve--fuel pressure ---EGR system---injector/s ---ECM
because the EVAP purge valve appears in all codes I would be inclined to change that unit first the run the fault codes again

Jul 23, 2015 | 2006 Chevrolet Chevrolet Cobalt LT

2 Answers

I replace gas cap and evap vent solenoid and stel have c ad po449?


have you check the purge valve, and your vacuum lines? here's a vid you might want to check out:

https://www.youtube.com/watch?v=AlfOSMmisPg

Jun 20, 2015 | 2007 Chevrolet Impala LS Sedan New Cars

1 Answer

Why is a check gas cap message on 2006 chevy cobalt ls 2.2 showing on inst. panel? L4


I guess you have no knowledge about vehicles
made for the last 35 years, since 1980

We have computers that monitor things & operate
the vehicles

You surely have heard of checking for OBD Codes

You have an Evap System problem to find & fix &
it does not have to be a failed gas cap

Ever read your owners manual,their not of much use,
but you have to get all that down first

Aug 17, 2014 | 2006 Chevrolet Chevrolet Cobalt LS

1 Answer

97 grande am keeps throwing engine code p0440 smoke tested no leaks what else could cause this


Replacing the gas cap is the only other thing I could think of if there are no leaks on the line and you replaced all the evap/purge components.

Perhaps an issue with the pigtail on the solenoid/sensor or a problem on the wires between the sensor and the computer. See what the readings are with a OBD2 scanner that does more than just pull codes. That might narrow it down.

Oct 25, 2012 | 1997 Pontiac Grand Am

2 Answers

Po440 comes up as evap emmissiion malfuntion what sensor is that?


Most likely the gas cap is loose but, ....unless there is a hole in one of the evap lines or the fuel fill pipe, the most logical problems are the cap, the vent solenoid, and lastly the purge solenoid....

Take the cap off and re install it making sure it is tight and it clicks at least 3 times, drive tha car a while and after a certain number of starts and re starts of the engine the code should clear, if not then start checking the vacuum lines to the vapr recovery system as well at the gas fill hose and like I stated the last items will be those selenoids.

Aug 25, 2011 | 2003 Chevrolet Impala

1 Answer

Check engine light ...code came up p0455 i have a 06 mazda 3 2.3


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


Hope this helps (remember to rate thsi answer).

Mar 15, 2011 | Mazda MAZDA3 Cars & Trucks

1 Answer

I have a 2006 Chevy Cobalt and I have read several posts that sound like the problem I am having. My car runs fine then the engine will start surging--the RPM guage will swing wildly from 500-2000 while...


i have an 06 cobalt with the same issue and when my engine light finally came on it showed up as evap system malfunctioning. This is for the emissions system. My code shown was P0440. This can be caused by a faulty or loose gas cap, a purge valve, a vent valve, or the evap canister. I am waiting on the purge valve to arrive now so should know if that takes car of mine in a week, but i have already replaced my gas cap and the problem is still there. Hope this helps you some

Aug 04, 2010 | 2006 Chevrolet Cobalt

3 Answers

What is PO496 code? I've got a PO171B also, which I'm assuming is dirty an O2 sensor.


2007 cobalt and am getting P0496 code as well. would love to know what is cause!

Apr 30, 2009 | Chevrolet Cobalt Cars & Trucks

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