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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 438 (Engine Control System - Self-Diagnostics - 5.3L) >> Diagnostic Tests >> DTC P0134: Ho2S Circuit - Insufficient Activity - Bank 1, Sensor 1 & DTC P0154: Ho2S Circuit - Insufficient Activity - Bank 2, Sensor 1 >> Conditions For Setting DTC

Conditions For Setting DTC

WARNING: This page is about a different car, the 2003 GMC Envoy XL and 2003 Chevrolet TrailBlazer. 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 between 350-550 mV for 60 seconds.

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