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Conditions for Setting the DTC

WARNING: This page is about a different car, the 2004 Pontiac Grand Prix. However, it is still accessible from the selected car via links, so may be relevant.
  1. The HO2S 2 parameter is between 290-685 mV during the passive test.
  2. One of the following tests fail:
    • Lean Intrusive Test
      • The PCM detects that the HO2S 2 voltage is more than 290 mV for 11.4 seconds.
      • The PCM detects that the HO2S 1 voltage is less than 100 mV.
    • Rich Intrusive Test
      • The PCM detects that the HO2S 2 voltage is less than 685 mV for 11.4 seconds.
      • The PCM detects that the HO2S 1 voltage is more than 777 mV.
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