My Check engine light came on in my 05 magnum. I checked the code and it is u0101. Does anyone have any ideas on what the code is and how to fix it.

 

it means lost communication with the TCM (transmission control module). i would try clearing the code and see if it comes back first. it maybe just a glitch. you can also check the wire connection at the TCM and make sure it's secure. the TCM is a small box under the dash by the steering column. if someone was messing under there, they may have loosen the connection. finally, the TCM itself maybe failing. good luck