I’ve had my sq7 for 3 weeks now...been bk to the dealer twice as the engine management light came on so called Audi assist to come out & check the car,fault code p20EE...1st time in the dealer they cleaned the nox sensor & I picked the car up but the engine management light came bk on that night...called Audi assist again to check,same problem p20EE...dealer replaced the nox sensor,all is good for ONE day then the light came bk on again..called Audi assist & the same fault code came bk on...the assist guy said it might be the catalyst converter that need changing,so booked the car in for nextweek...any sq7 owners have this problem or is it only me


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