iOS9 “Error 53” root causes

I recently replaced a complete iPhone 6 display assembly including a new Home Button assembly and got "Error 53".

I have put back the original Home Button assembly onto the new display assembly but I can get rid of "Error 53".

1) Should I be able to recover the phone from Error 53 by putting the original Home Button assembly back assuming there is nothing damaged elsewhere?

2) Has anyone got evidence that replacing the Home Button is NOT the only root cause for Error 53 but that replacing the screen assembly can also be another root cause for Error 53?

3) Has anyone got evidence that replacing the Home Button is NOT the only root cause for Error 53 but that replacing the long Home Cable running behind the LCD can also be another root cause for Error 53?

Details: It is already well established that such error is generated when the motherboard can’t match the Touch ID number stored in an IC mounted onto the Home Button assembly flex. It is obvious such matching fails if the original Home Button assembly is replaced or if the flex running behind the LCD and connetti g the Home Button assembly to the motherboard is damaged. I don’t think there is anything damaged in the iPhone. A number of sources on the Internet report that replacing the Home Button is NOT the only root cause for Error 53 and that replacing the screen assembly can also be another root cause for Error 53. Moreover, other sources (cf. "Replacing the cable will cause the Touch ID sensor to stop working") report that replacing the long Home Cable running behind the LCD can also be another root cause for Error 53; how can this be true if the long Home Cable does not have any IC storing an ID number?