17748 fault code

jay22s3

2nd gear sorts em out
Joined
Jan 29, 2013
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preston lancashire
Morning all i've recently had to put another second hand engine in my s3 as the cambelt went since the new engine has been in i keep getting the code 17748 cam position sensor ive changed it and the crank sensor but it still keeps coming back car is running perfect cant understand it anyone else been thew this problem ? any help would be much appreciated