Purge Flow Sensor: Testing and Inspection

Poor idle, stalling and poor driveability can be caused by the following conditions:

^ Malfunctioning EVAP purge solenoid.
^ Damaged canister.
^ Hoses split, cracked and/or not connected properly.

An incorrect EVAP purge system flow should set a DTC P0441. A continuous purge condition with no purge commanded by the PCM should set a DTC P1441. An electrical fault in the EVAP Vacuum Switch circuit should set a DTC P1442.