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2005 Chevy Silverado OBDII P0449

Tiny
MAKO22
  • MEMBER
  • 2005 CHEVROLET SILVERADO
  • V8
  • 4WD
  • AUTOMATIC
  • 103,000 MILES
Evaporative Emission Vent Vlave Solinoid Circuit.

What does this mean and how do I fix the problem?
Monday, June 22nd, 2009 AT 7:49 PM

3 Replies

Tiny
BLUELIGHTNIN6
  • MECHANIC
  • 16,542 POSTS
DTC P0449 : Evaporative Emission (EVAP) vent Solenoid Control Circuit

This code is very common on this vehicle. The solution the majority of the time is to fix the wiring to the evap vent. The connector to the valve loses ground from the computer. At the pigtail, the wire turns green (corrodes) and loses the connection it needs. Replace the pigtail with #pt250. Be sure to use the updated valve and relocate the filter as well. If the wiring tests and looks OK, however, then suspect a faulty EVAP vent solenoid.
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Monday, June 22nd, 2009 AT 8:20 PM
Tiny
MIKEVI
  • MEMBER
  • 1 POST
Nicely done, but kindly be clear what a #pt250 is, A terminal? Connector?
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Tuesday, August 4th, 2009 AT 8:09 PM
Tiny
BLUELIGHTNIN6
  • MECHANIC
  • 16,542 POSTS
Its the updated pigtail connection
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Thursday, August 6th, 2009 AT 8:57 PM

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