2009 TOYOTA COROLLA MATRIX Electronic Stability Control Esc Problems

ELECTRIC POWER STEERING (EPS) WAS BLINKING AND STAY ON YESTERDAY. TODAY IT DOES THE SAME. SO TWO DAYS IN A ROW THIS HAPPENED. THIS HAPPENED WHEN I WAS DRIVING ON THE FREEWAY BOTH DAYS.

MY CHECK ENGINE LIGHT HAS COME ON AND OFF SPORADICALLY, SINCE THE VEHICLE IN QUESTION WAS BOUGHT OF THE SHOWROOM FLOOR FROM SUNNY SIDE TOYOTA SINCE MARCH 2009 ALL THE WAY UP TO THE PRESENT. NOW, I DIDN'T PURCHASE THIS VEHICLE, HOWEVER, MY BUDDY WHO DID HAS CLAIMED THIS LIGHT -- CHECK ENGINE, ALONG WITH ABS AND VSC WOULD COME ON TOGETHER. ALTHOUGH, HE HAS SAID, IT'S NEVER AFFECTED THE PERFORMANCE OF THE SAID VEHICLE -- I KNOW BETTER!! SINCE THE VEHICLE IS NOW UNDER MY OWNERSHIP AND UNFORTUNATELY, IT'S OUT OF WARRANTY. HOWEVER, THERE IS A TSB ON THIS EXACT SERVICE CODE P0607, WHICH INVOLVES CHANGING OUT THE PCM AND THE OTHER P CODE HAPPENS TO BE P0138, WHICH IS THE 02 SENSOR. SINCE THERE IS A TSB ON THIS SPECIFIC CODE - P0607, IT AFFECTS CERTAIN COROLLAS AND MATRIX FOR THE YEARS PRIOR TO MY VEHICLE -- SO...