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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1256 (Instrument Panel, Gages, And Console) >> Diagnostic Information and Procedures >> DTC P0656: Pcm >> Circuit Description

Circuit Description

WARNING: This page is about a different car, the 2003 Pontiac Grand Prix. However, it is still accessible from the selected car via links, so may be relevant.

The PCM controls the fuel gage based on the fuel level signal. DTC P0656 will set when the PCM detects an improper voltage on the fuel gage signal circuit.