Non-start with light flashing while engine is cranking is usually an immobiliser problem but, as Nigel says, we need more info.
Brian.J.
July 2008
Without the make & model of the car, in general it means the engine fuel injection computer has detected a fault, and if it will not allow the engine to start it must be a serious fault, the only way to find out is to get the car connected to a diagnostic code reader, doesn't have to be the dealership as most good independant garages will have the kit to do this and will be a lot cheaper than the dealership!!
nigel
July 2008
Automatic Answer
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