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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1064 (Engine Controls Diagnosis - 8.1L (DTC P0068 To P0174)) >> Diagnosis >> DTC P0138 or P0158 >> Conditions for Setting the DTC >> Decel. Fuel Cutoff Test

Decel. Fuel Cutoff Test

WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

The PCM detects that the affected HO2S voltage parameter is more than 480 mV for 5 seconds.

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