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P0449 Chevrolet

P0449 Chevrolet - Evaporative Emission Vent Valve Solenoid Malfunction

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P0449 Chevrolet Comments |  Add Comment
Possible causes
- Vacuum leaks, damaged hoses or improper routing
- EVAP system - Check fuel cap, canister, valves or components
- Faulty purge or vent solenoids
- Check connector and wiring
- Fuel saturated vapor canister
- Failed EVAP vent solenoid
Help with Possible causes What does this mean?
When is the code detected?
The Engine Control Module (ECM) has determined that a malfunction exists in the electrical circuit for the vent valve/solenoid in the evaporative emission control system.
Possible symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
P0449 Chevrolet Description

The Engine Control Module (ECM) monitors the Evaporative Emission System (EVAP) Vent Valve/Solenoid system wiring for opens or shorts.

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CHEVROLET Technical Service Bulletins for P0449 code
2003 CHEVROLET SILVERADO CLASSIC Engine And Engine Cooling:engine Details
2003 CHEVROLET SILVERADO CLASSIC Engine And Engine Cooling:exhaust System:emission Control Details
2003 CHEVROLET SILVERADO CLASSIC Fuel System, Gasoline:storage:tank Assembly:filler Pipe And Cap Details
2004 CHEVROLET SILVERADO CLASSIC Engine And Engine Cooling:engine Details
2004 CHEVROLET SILVERADO CLASSIC Engine And Engine Cooling:exhaust System:emission Control Details
More Bulletins Help with Technical Service Bulletins What does this mean?
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