I recently had an amp and subwoofer installed in my 06 4.0. When I got the car back the stereo was booming but my check engine light was on the overdrive off light was flashing yellow as well. The shifting solenoids,clutch solenoids, basically lost part of the electrical system to control the tyranny is what the diagnostics codescare indicating. It's an automatic by the way. Could this install have caused this? It was running just fine before the install. I know that the amp only comes on...

Can amp install knock out electrical system in transmission?