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Home >> Pontiac >> 2008 >> Torrent GXP, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 153 (Engine Controls And Fuel - 3.6L - DTC P2122 To DTC P2636) >> DTC P2271 or P2273 >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different car, the 2009 Pontiac Torrent and 2009 Chevrolet Equinox. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition ON, observe the DTC information with a scan tool. Verify that DTC P0137, P0138, P0140, P0157, P0158, or P0160 is not set.
  2. Operate the engine above 1,200 RPM for 30 seconds, observe the scan tool HO2S 2 voltage parameter. The reading should fluctuate above and below the range of 401-519 mV.
  3. Operate the vehicle within the Conditions for Running the DTC to verify the DTC does not reset. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.
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