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Home >> Buick >> 2007 >> Allure CX >> Repair and Diagnosis >> External Pages >> Different car >> Section 68 (Engine Control System & Fuel System - 3.6L - DTC P0335 To DTC P2097) >> DTC P0449, P0498, or P0499 >> Conditions for Setting the DTC >> P0499

Conditions for Setting the DTC: P0499

WARNING: This page is about a different car, the 2008 Buick LaCrosse and 2008 Buick Allure. However, it is still accessible from the selected car via links, so may be relevant.

The ECM detects the voltage on the EVAP canister vent valve control circuit is greater than 4.6 volts when the driver is commanded ON. The condition is present for greater than 4 seconds or for a cumulative of 50 seconds.