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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 P2232 or P2235 >> Circuit/System Testing

Circuit/System Testing

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 OFF, disconnect the harness connector of the appropriate HO2S 2.
  2. Ignition ON, verify the scan tool HO2S 2 parameter is between 400-520 mV.
    • If greater than 520 mV, test the signal circuit of the HO2S sensor for a short to the heater circuit. If the circuit/connections test normal, replace the ECM.
  3. If all circuits/connections test normal, replace the applicable HO2S 2.
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