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Home >> Buick >> 2004 >> Century Limited >> Repair and Diagnosis >> External Pages >> Different car >> Section 91 (Engine Controls Diagnosis 3.8L (DTC P0455 To P1404)) >> Diagnosis >> DTC P1133 >> Conditions for Setting the DTC

Conditions for Setting the DTC

WARNING: This page is about a different car, the 2004 Buick Regal. However, it is still accessible from the selected car via links, so may be relevant.

The PCM detects that the HO2S 1 voltage had fewer rich to lean switches than a calibrated value during a 90 second monitoring period.

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The PCM detects that the HO2S 1 voltage had fewer lean-to-rich switches than a calibrated value during a 90 second monitoring period.