Conditions for Setting the DTC

1. The ECM detects that the HO2S 2 did not transition below 300 mV and above 725 mV during the passive test.
2. One of the following tests fail:
   • The lean intrusive test
     • The ECM detects that the HO2S 2 is more than 300 mV for 12 seconds.
     • The HO2S 1 is less than 300 mV.

       OR

   • The rich intrusive test
     • The ECM detects that the HO2S 2 is less than 725 mV for 12 seconds.
     • The HO2S 1 is more than 600 mV.

DTC P2A01 sets within 60 seconds when the above conditions are met.