Register a free account today to become a member! Once signed in, you'll be able to participate on this site by adding your own topics and posts, as well as connect with other members through your own private inbox!
Sensor 1 would be the lambda IIRC
If the lambda is faulty then it will cause the car to overfuel, which in turn may have cause the knock sensor fault to come up as the engine may of pinked or detted slightly.
Have you noticed a drop in MPG on the trip computer, is the car running right, feels...