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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 555 (Starting System) >> Diagnostic Tests >> DTC P0620: Pcm Detects That The PWM Signal On The Generator Field Duty Cycle Signal Circuit Is Not Within The Expected Range >> Conditions for Clearing the MIL/DTC

Conditions for Clearing the MIL/DTC

WARNING: This page is about a different car, the 2003 Buick Regal, 2003 Buick Century, 2002 Buick Regal, and 2002 Buick Century. However, it is still accessible from the selected car via links, so may be relevant.

A History DTC will clear after forty consecutive warm-up cycles, if no failures are reported by this or any other non-emission related diagnostic. The current DTC will clear when the diagnostic runs and does not fail. Use a scan tool in order to clear the MIL diagnostic trouble code.

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