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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1640 (Engine Control System & Fuel System - 4.3L - DTC P0340 To DTC P2544) >> DTC P0443 or P0449 >> Diagnostic Fault Information

Diagnostic Fault Information

WARNING: This page is about a different car, the 2010 GMC Sierra and 2010 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
Circuit Short to Ground High Resistance Open Short to Voltage Signal Performance
Ignition 1 Voltage - Purge Supply P0443 P0443 P0443 - -
Battery Positive - Vent Supply P0449 P0449 P0449 - -
EVAP Purge Solenoid Control P0443 P0443 P0443 P0443 -
EVAP Vent Solenoid Control P0449 P0449 P0449 P0449 -