I have Mazda 6i 2003 (2.3L I-4), automatic. I have recently had a problem with my transmission. While driving on highway I've got AT and check engine lamps swiched on. Next day I started feeling some jolts while switching selector lever to position D and even harder jolts in position R, and jolts by shift changing on low shifts (1-2, 2-3). I got the car to service center and diagnostics detected two errors P0741 and P0771. They changed solenoid and aparently solved the problem. But only 2 weeks later I've got the same problem again with the same errors. My car does not run easily, very slow on the hills. Same jolts. Can anyone advise? I do not understand how it comes that only 2 weeks later the same problem appears.