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Home >> Buick >> 2007 >> Allure CX >> Repair and Diagnosis >> External Pages >> Different car >> Section 17 (HVAC System - Manual) >> Diagnostic Information and Procedures >> DTC P0645, P0646, or P0647 >> Conditions for Clearing the DTC

Conditions for Clearing the DTC

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 history DTC will clear after 40 fault-free ignition cycles.

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