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Home >> Buick >> 2004 >> Century Limited >> Repair and Diagnosis >> External Pages >> Different car >> Section 155 (Engine Controls Diagnosis (DTC P0030 To P0137) - 3.8L) >> Diagnosis >> DTC P0131 >> Conditions for Setting the DTC

Conditions for Setting the DTC

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

The PCM detects that the HO2S 1 voltage is less than 78 mV for more than 51 seconds.

OR

The PCM detects that the HO2S 1 voltage is less than 600 mV during power enrichment (PE) mode for more than 7.5 seconds.

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