Hi Chris, does your scantool show the settings in the BECM? I have had this fault a couple of times before, there is a 4 digit code sent from the BECM to the engine ecu, if this code is incorrect the engine will not start and it will set an immob code, although probably nothing will be shown on dash(this is not the same as the eka code). If the dash shows "engine disabled" you have an alarm problem and this is when you need the eka, make sure you have correct code and the door lock switches are working.

Also if you can see the BECM settings make sure the engine ecu type is correct