Conditions for Setting the DTC

• The PCM detects that the HO2S 2 did not transition below 300 mV and above 750 mV during the passive test.
• One of the following tests fail:

  Lean Intrusive Test

  • The PCM detects that the HO2S 2 is more than 300 mV for 10 seconds.
  • The HO2S 1 is less than 300 mV.

Rich Intrusive Test

• The PCM detects that the HO2S 2 is less than 750 mV for 10 seconds.
• The HO2S 1 is more than 600 mV.
• DTC P2A01 sets within 13 minutes when the above conditions are met.