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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 108 (Engine Controls Self-Diagnostics - 2.2L) >> Diagnostic Tests >> DTC P1441: EVAP System Flow During Non-Purge (SOHC) >> Description

DTC P1441: EVAP System Flow During Non-Purge (SOHC): Description

WARNING: This page is about a different car, the 2002 Pontiac Sunfire, 2002 Pontiac Grand Am, 2002 Oldsmobile Alero, and 2002 Chevrolet Cavalier. However, it is still accessible from the selected car via links, so may be relevant.

This DTC tests for undesired intake manifold vacuum flow to Evaporative Emission (EVAP) system. PCM seals EVAP system by commanding EVAP purge valve OFF (closed) and EVAP vent valve ON (closed). PCM monitors Fuel Tank Pressure (FTP) sensor to determine if a vacuum is being drawn on EVAP system. If vacuum in EVAP system is more than a calibrated value within a calibrated time, DTC P1441 will set.

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