Im new on here and need help. My cadi has been running fine until recently, hence the reason im on here asking for help. It all started when I was on a long drive when I found that the car decided to loose power. I did a tune up and after everything has been changed, decided to stall when I would start her up. Never happened before. Well a week later, as im driving on the freeway at 70 mph, she decides to lose power. While going to the shoulder she turns off on me. After I put her in park, she cranks but no start. At first, I thought it was something like the fuel sensor or pump, but when I did a diagnostic, she came back with e41, e52, and e55. The e41 has been fixed, so as I went to reset the codes, the e55 remained and she is doing the same thing. Can anyone give me an insight on what it can be??