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P0449 Diagnostic Trouble Code Discussion for December 2009

EVAP Vent Solenoid Control Circuit Malfunction

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Trouble Ticket Help Requests for DTC P0449
Help Request Posted
2002 Buick LeSabre Custom 3.8L Poor Idle Quality, Cuts out, MIL Lamp on, P0449 VIN: 1G4HP54K92
P0449: EVAP Vent Solenoid Control Circuit Malfunction. ... this 2002 3.8 LeSabre Custom. (It's my Wife's car so, I really have a vested interest in getting it straightened out!) The engine idles fine after a cold start, the rpm drops normally as it warms up but, once down to about "base idle", the rpm will...
December 16, 2009