Question about 1999 Chevrolet Silverado 1500

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What does the code pO449 mean? - 1999 Chevrolet Silverado 1500

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You have a bad EVAP solenoid. I just replaced mine on my 2005 Tahoe, it's a very common problem in Chevy trucks/SUV's

The cheap way is to replace it with the OEM GM part # 25932571, it lists for about $28. Otherwise you can replace the solenoid and add the filter kit. You can find the directions for that by following this link: The filter kit runs about $180 for the solenoid and filter. Replacing just the solenoid does the trick and is the same as it came from the factory. The filter is meant to filter the dust etc out in harsh driving conditions.

http://www.gm-trucks.com/forums/index.php?showtopic=82504&hl=Evap

Post #9 has a pdf that outlines the installation of the solenoid and the new filter.

Posted on Oct 04, 2009

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Evap emissions control system vent valve/sol malfunction

Posted on Oct 04, 2009

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I have a code PO449, and it says evaporator sensor. What am I looking for?


Please go here on pc, it will tell you in detail whats possibly wrong. obd-codes.com/po449, God-Bless!

Dec 29, 2015 | 2008 Chevrolet Chevrolet Cobalt LT

1 Answer

2008 chevy cobalt engine light on


Your Po449 code means: Evaporative Emission (EVAP) Vent Solenoid Control Circuit. Check to see if anything on you EVAP system has gotten disconnected and make sure that none of your hoses have gotten old and bridle or have holes. If everything looks ok, you probably have to replaced the Vent Solenoid Valve, which is located on the EVAP canister.

Jan 30, 2013 | 2008 Chevrolet Cobalt

1 Answer

What does code po449 mean


PO449---Evap System Vent Valve/Solenoid Malfunction

You can also Google any OBD2 Vehicle Codes-- to get
all sorts of info on any problem

Nov 25, 2012 | 2006 Pontiac G6

1 Answer

What do i need to fix with my 2002 buick rendevous diagnosis showing code # po449


P0449 BUICK Description The Engine Control Module (ECM) monitors the Evaporative Emission System (EVAP) Vent Valve/Solenoid system wiring for opens or shorts. Could be a problem with the vent solenoid or other component of the fuel tank venting system.

Read more: http://engine-codes.com/p0449_buick.html#ixzz21r2pw0wE

Jul 27, 2012 | Buick Cars & Trucks

1 Answer

Engine code po449


engine lights came on and the codes are po449 and po449p on a 2007 chevy avalanche

Jun 30, 2012 | 2007 GMC Yukon

1 Answer

Po449 0n 2006 chevy cobalt


P0449 control vent valve/solenoid circuit malfunction, This code necessarilly deal with replacing the vent solenoid it about the circuit,the evap vent solenoid circuit may have rub through on the frame (located on the back of the fuel tank),it can also be the connector,the vent solenoid itself,or the connector

Mar 24, 2012 | 2005 Chevrolet Silverado

1 Answer

2005 chevy Z71 check engine code PO449 and PO455 5.3 Lt engine how do i fix them


get a new gas cap your evap sytem isnt working if the gas cap doesnt work then you might have a leak and check your EVAP purge valaves

Dec 07, 2011 | Cars & Trucks

1 Answer

I have a 2004 Chevy pick up with a PO449 code, I checked the voltage @ the solinoid and I have a key on positive and no ground from the computer, I also tested the wires to make sure the plug was good.


this is an obd2 trouble code table, it can help you understand then meaning of code.
You need replace the vent valve/solenoid gimmick, then clear the code,I hope this can solve the problem.

Jul 08, 2011 | Chevrolet 1500 Cars & Trucks

1 Answer

WHAT TO DO ABOUT TROUBLE CODES PO449 & PO141 ON 01 VENTURE


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


A code P0141 may mean that one or more of the following has happened:
  • open or short to ground in the wiring harness
  • O2 heater circuit wiring high resistance
  • O2 heater element resistance is high
  • Internal short or open in the heater element
Note: Typically a failed catalytic converter does not cause this code. You're more likely to see a P0420 code for a failed converter.
Possible Solutions
  • Replace oxygen sensor (cannot repair open or short that occurs internally to sensor)
  • Repair short or open or high resistance in wiring harness or harness connectors

Oct 10, 2009 | 2001 Chevrolet Venture

1 Answer

Trouble code po449 2006 chevy avalanche


CODE PO449 -EVAP VENT SYSTEM PERFORMANCE CONDITION.POSSIBLE CAUSES. VENT SOLENOID CONTROL CIRCUIT IS OPEN OR SHORTED TO GROUND OR.VENT SOLENOID CONTROL CIRCUIT IS SHORTED TO SYSTEM POWER B+.OR VENT SOLENOID POWER CIRCUIT IS OPEN TEST THE ENG 1 FUSE.OR VENT SOLENOID IS DAMAGE OR HAS FAILED.OR PCM HAS FAILED.

Aug 19, 2009 | 2003 Chevrolet Silverado 1500

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