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Home >> Chevrolet >> 2001 >> Venture Base, Van Passenger >> Repair and Diagnosis >> External Pages >> Different car >> Section 806 (Engine Controls (Introduction) -- 5.7L) >> Description and Operation >> Evaporative Emission (EVAP) Control System Description >> Purge Solenoid Leak Test

Purge Solenoid Leak Test

WARNING: This page is about a different car, the 2004 Chevrolet Corvette. However, it is still accessible from the selected car via links, so may be relevant.

If the EVAP purge solenoid does not seal properly fuel vapors could enter the engine at an undesired time, causing driveability concerns. The control module tests for this by commanding the EVAP purge solenoid OFF and the vent solenoid ON, sealing the system, and monitors the FTP for an increase in vacuum. If the control module detects that the EVAP system vacuum increases above a calibrated value, DTC P0496 will set.

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