I don't know much about modern games and their diagnostics, but the error message seems to indicate a short circuit on the wires feeding the coil.

Does the coil 'knock' when connected?  If there is a short on the feeding wires, it would not, or at best the knock would be weak.  Check the wiring all the way back from the coil to the board.  But more likely an issue with the whatever powers the coil.  If its a faulty transistor driver (presuming that is how it works), disconnecting it could fix it.