Home >> Buick >> 2015 >> Regal GS, AWD >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> Engine Controls And Fuel - 2.0L (LTG) - DTC P0010 To DTC P0333 >> Diagnostic Information and Procedures >> DTC P0133, P013A, P013B, P013E, P013F, P015A, P015B, P2270, or P2271: HO2S >> Conditions for Clearing the DTC