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			That looks like it could the problem. But like I said before, you should have some codes coming up if it`s a wheel speed sensor or something else related to the PSM and ABS systems.  
A regular OBD scanner can't read Porsche faults codes in the PSM and ABS modules. You need a Porsche code reader, like Durametric, etc.
		 
		
		
		
		
		
		
		
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