Hi all,recently purchased A160 for daughter and all was good when I got it but now throwing up fault code P1504 on my MBll scanner,when I try to clear code it clears but comes straight back,also hear single click from engine bay once code comes back??
I was thinking of getting MAF air mass meter repaired,will this fix problem???
Any help would be greatly appreciated ?


I don't think it is related to the MAF. But if the car has high miles it will not hurt to change the MAF. It very easy and you can do it yourself. 

It could be a vacuum leak in the intake. 


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