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Home >> Buick >> 2004 >> Century Custom >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls (DTC P0030 To P0138) >> Engine Controls Diagnosis >> DTC P0133 >> Conditions for Setting the DTC

Conditions for Setting the DTC

The PCM detects that the HO2S 1 rich-to-lean transition time takes longer than 105 milliseconds

OR

The PCM detects that the HO2S 1 lean-to-rich transition time takes longer than 95 milliseconds

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