2008 Toyota Camry Electronic Stability Control Esc Engine Problems

IN JULY 2016 I BEGAN TO NOTICE MY CAR WAS STRUGGLING TO MAINTAIN IT'S POWER. WHEN I DROVE THE CAR AND STEPPED ON THE GAS IN WASN'T GETTING MUCH POWER. WHEN IN TRAFFIC OR STOPPED AT A TRAFFIC LIGHT IT WOULD STALL WHEN TRYING TO DRIVE OFF AND THEN THE CHECK ENGINE LIGHT WOULD COME ON. I BROUGHT MY CAR TO TOYOTA SERVICE CENTER AND THEY WORKED ON MY CAR FOR SEVERAL DAYS. THEY WERE ABLE TO GET THE CHECK ENGINE LIGHT OF AND REMEDY THE PROBLEM BUT COULD NOT DETERMINE THE CAUSE. IN DECEMBER 2016 I STARTED TO EXPERIENCE THE SAME PROBLEM. I WAS LOSING POWER AND THE CAR WOULD STALL WHEN AT A COMPLETE STOP, IT WAS RIGHT AFTER THE CHECK ENGINE LIGHT CAME ON. I BROUGHT MY CAR BACK TO TOYOTA FOR SERVICING AND THEY HAD A DIFFICULT TIME DETERMINING THE CAUSE BUT CAME TO A CONCLUSION THAT IT WAS A SENSOR CODE. I FOLLOWED THEIR ADVICE FOR SERVICING AND PAID FOR THE THE SENSOR CODE TO BE REPLACED. NOW WE'RE HERE IN MARCH 2017 AND I'M HAVING THE SAME PROBLEM. THE SAME PATTERN WHERE THE CAR STRUGGLES TO GAIN POWER AND WHEN I DRIVE TO TO STOP IN TRAFFIC THE CAR BEGINS TO STALL. IT IS RIGHT AFTER THE CHECK ENGINE LIGHT COMES ON. I RETURNED TO TOYOTA FOR THE PROBLEM BUT HEY COULD NOT DIAGNOSE THE PROBLEM. MY CAR IS BEING RETURNED WITHOUT A CAUSE.