Hi. I have a macbook pro 13" early 2011. My fan is constantly running at over 7000rpm. The Apple Hardware test gives me the error code: 4MOT/4/40000002: Exhaust - 7890. The average temperature of the CPU is 50-58. I have done a SMC reset and PRAM reset and it didn't help. I can't controll the fan speed in SMCfancontrol and apps like that. Do anyone know how to fix this without buying a new logic board.