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Home >> GMC >> 1997 >> Forward Control 4.3 W, L35, Automatic >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 11 (Engine Controls - Tests W/Codes - 7.4L (P Series)) >> Diagnostic Trouble Codes >> DTC P1406 - EGR Valve Pintle Position Circuit >> Circuit Description

Circuit Description

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VCM constantly monitors linear EGR valve pintle position sensor to ensure valve is responding properly to commands from VCM.

DTC will set when the following conditions are present: