hi there,

a few months ago the check engine light flashed a couple of times, only now I could plug it to a laptop but there were no fault codes... is this normal?
it flashed when I was going about 100 mph on the highway. ( both times )
thanks,
carlos

 

Has it been mapped to flash the Cel light when Knock is detected?

 

the codes will be erased from the memory after so many ignition cycles with no codes recorded... can't remember the amount.. something like 25times..
as it recorded the ok no codes etc..

Simon

 

forgot to mention the car is stock and it's a my02 wrx