p0300 code

[tajger8]

Hey guys, new to the forum and have a question about a 04 Aveo. I have two codes showing up on my girlfrieds aveo, p0300 and soemthing 2105, i think it was U2105. I know the first one has something to do with the tranny. Any help or suggestions on where the problem lies is greatly appreciated. Many thanks.

[taillight]

P0300 is random misfire. It is an engine code.
U2105 is not in my book. Are you sure of that number ?

[mikedudley17]

what kind of scanner you using?