1.CHECK GROUND CONNECTION
 
 2.CLEAR THE MIXTURE RATIO SELF-LEARNING VALUE
 
 3.CHECK HO2S2 GROUND CIRCUIT FOR OPEN AND SHORT
 
 4.CHECK HO2S2 INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
 
 5.CHECK HEATED OXYGEN SENSOR 2
 
 6.REPLACE HEATED OXYGEN SENSOR 2
 
 7.CHECK INTERMITTENT INCIDENT