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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 508 (Engine Controls/Fuel - 5.3L, 6.0L, 6.2L - DTC P0420 To DTC P3449 And Diagnostic Information And Procedures) >> Diagnostic Information and Procedures >> DTC P2271 or P2273 >> Conditions for Setting the DTC

Conditions for Setting the DTC

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P2271 

The ECM does not detect an HO2S voltage less than 150 mV before accumulated mass air flow exceeds a calibrated value.

P2273 

The ECM does not detect an HO2S voltage less than 100 mV before the accumulated mass air flow exceeds a calibrated value.

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