I've just noticed the check engine light is flashing 4 times just after I start the car, can't remember this happening before. but I normally have a disclock in place, start the car and then remove the disclock, So i haven't been able to see the dash before.

I've checked on my Secs unit and no fault codes are being shown.

Is this anything to worry about????

 

Iminant engine detonation.... Sorry

 

just done the ecu test and it shows 23 Maf and 22 Knock sensor, The maf was only changed a couple of months ago, I've no idea where the Knock sensor is, Any help