P0449 code: couldn't get an inspection due to

https://www.youtube.com/watch?v=34WJXJMNtfY https://www.youtube.com/watch?v=PErhl_mIwGA

Most of the vent valves are not hard to replace. They are located near the fill tube for the gas tank. Most cars are behind the wheel well. I can usually change them in about 1/2 hour.

P0449 - OBD-Codes.com

www.obd-codes.com/p0449

Detailed information on diagnosing and repairing a P0449 DTC code which refers ...P0449 Evaporative Emission Control System Vent Valve/Solenoid Circuit ... OBD-IITrouble Code Technical Description ... 2004 Chevrolet Tahoe 4.8L p0449

EVAP Code P0449 - YouTube

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https://www.youtube.com/watch?v=AlfOSMmisPg
Mar 13, 2013 - Uploaded by realfixesrealfast
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https://www.youtube.com/watch?v=aL5KmV1d26Y
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Hello there

Lots of people seem to get this code.

Electrical diagram is included in the Haynes Manual (which EVERYBODY should have for their car !!) Available here.http://www.haynes.com/products/?searchType=vehicleApplicationSearch2&searchEnd=yes&sfID1=&sfID2=&sfID3=&year=2009&make=Chevrolet&model=Traverse&x=22&y=11


http://engine-codes.com/p0449_chevrolet.html This says the vent valve/solenoid in the evaporative emission control system.

Something similar here which will be of use to you.
http://www.gm-trucks.com/forums/topic/82504-check-engine-light-code-p0449/
Vent Solenoid problem ...changed seems to have cured it.

I am sending you a little info on your problem.. Hope it helps.. Best of Luck..

2006 Chevrolet Colorado LT 2.8L, Vin 8, Eng Cfg L4 Customer Concern: Current Powertrain Control Module (PCM) code P0449. Tests/Procedures: 1. Inspect the evaporative vent solenoid, near the fuel tank and evaporative canister. Look for wire damage, corrosion.

2. Check voltage to the solenoid on the Orange wire. It should be battery voltage, backprobing. If not, check the voltage level on the CAN VENT fuse, #69 in the Underhood Bussed Electrical Center (UBEC).

3. Cycle the evaporative vent solenoid with a scan tool. The solenoid should click.

4. Backprobe the White wire, pin 22 of the blue PCM connector. The voltage on this wire should be battery voltage with the solenoid off and close to 0 volts with the solenoid on. Potential Causes: Evaporative Vent Solenoid
Solenoid Wiring
Tech Tips: The evaporative vent solenoid is attached to the side of the evaporative canister above the spare tire.

{: ) If your vehicle is equipped with an air suspension system, one possible source for this combination of codes is the wiring along the air compressor located on a bracket on the left rear chassis frame, near the spare tire. Carefully pull the plastic conduit off of the wires, and inspect the wires for any cuts / abrasion or possibly a resulting corrosion (due to a short or open circuit & water exposure)

These are very common codes. Code P0499 is for the EVAP Canister Vent Control Solenoid circuit and Code P0455 indicates that there is a large leak in your EVAP system. Chances are VERY LIKELY that the leak is being caused by the vent control solenoid being stuck open. If this is the case, repairing what is wrong with the Vent Control Solenoid has a very good chance of fixing BOTH codes.

There is a Technical Service Bulletin (TSB) for your vehicle that applies to code P0455:
TSB REFERENCE NUMBER 02-06-04-037I (NOTE: That last digit is an "I" not a "1")

The vent control solenoid fails due to water, dirt and debris entering the solenoid through the vent filter. This TSB involves replacing the vent control solenoid and installing a long section of heater hose to the vent filter and relocating it away from the underside of the vehicle. I usually use about 8 feet of hose and tie the filter unit to the brace under the hood next to the brake booster. It is not very hard to do. The hardest part is disconnecting the electrical connector from the original solenoid - it is not very easy to get your hands in there.

The kit is available from any parts store that carries AC Delco parts. The kit comes with everything you need except the heater hose and wire ties to secure it.

The part number for the kit is: 19152349

I have also had a couple of them where the wiring harness has rubbed against the underside pinch-weld area of the left rear of the cab, causing the code P0449 When you install the new service kit, be sure to inspect the wiring harness to the solenoid connector for damage here.

P0449....Evaporative Emission Control System Vent Valve/Solenoid Circuit could be the engine breather

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