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Home >> Cadillac >> 2005 >> Escalade ESV >> Repair and Diagnosis >> External Pages >> Different car >> Section 142 (Engine Control System - 8.1L (DTC P0053 To P0172/P0175)) >> Diagnostic Information and Procedures >> DTC P0138 or P0158 >> Conditions for Setting the DTC >> Rich Test

Rich Test

WARNING: This page is about a different car, the 2005 GMC Yukon XL, 2005 Chevrolet Suburban, and 2005 Chevrolet Avalanche. 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 950 mV for 200 seconds.

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