Renault Espace Fault Code 3104.

Hello I am a new member and trying to find my way around this site. Can any one tell me what the problem is when a fault code 3104 has came up on an OBDII reader plugged into my Renualt Espace, Petrol, 2.0L, 16V, Year 2000. It is a Ignition Circuit fault, but what do I need to replace to get my car running again. Is it something major?

There was also two other code numbers: 2304, and 2504. Can any one tell me about these as well.

Thanks.