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P0449 Diagnostic Trouble Code Discussion for February 2015

EVAP Vent Solenoid Control Circuit Malfunction

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Trouble Ticket Help Requests for DTC P0449
Help Request Posted
2007 GMC Yukon Denali 6.2L Stall VIN: 1GKFK63837
P0449: EVAP Vent Solenoid Control Circuit Malfunction. vehicle will stall as you come to a stop sign. sometimes will not start for ten minutes. it has stalled one time while we were test driving the vehicle. without turning the key off i checked for engine rpm on a scanner and it was good. the fuel pressure was no...
February 09, 2015
2005 Chevrolet Avalanche 1500 LT 5.3L Excessive Emissions VIN: 3GNEK12Z35
P0449: EVAP Vent Solenoid Control Circuit Malfunction. Had this Avalanche in back in November had power to vent solenoid no ground from pcm, wire from pcm to solenoid is good. Installed reman Delco pcm. Now 1157 bulb lights at solenoid connector but its dim and will not operate solenoid. Ground wire at pcm and ven...
February 10, 2015
2008 Chevrolet Impala LS 3.5L No Start VIN: 2G1WB58K28
P0449: Evap vent solenoid circuit. ... -25c weather. Inspected car for engine light on p0449 evap vent circuit. Check air filter ok, check maf very dirty and debris stuck all over it looked like ran with out air filter. Cleaned it, inspected spark plug plugs and they were extremely black and fu...
February 28, 2015