Chosen Solution
MacBook 13" Unibody (Model A1342) Mid 2010 Hello! Cooling fan of my macbook always works at full speed. I’ve already clean up laptop, replace the thermal paste and made a reset of SMC/NVRAM. Apple Hardware Test shows the “4mot/1/40000002: exhaust -0” error. iStat shows that exhaust fan works at 0 rpm. All thermal sensors works fine and shows around 30-35 degrees. What can i do with it? Do i need to replace the fan? Or maybe there is a problem with something else? Thank you!
Sounds like the fan unit is gone Opened it up again and see if you can carefully rotate the fan blade with a small spray of can’t air, don’t over do it as you can damage it! Is it free spinning? Also check the fans connections are they correctly seated? If both are yes its time for a new fan unit.
