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RS4 B7 VCDS Group 26 Knock Control Cylinder Voltage

Posted: Sat Nov 23, 2019 11:52 pm
by abbyfaz
Hi All,

I have just had a play with VCDS on my RS4 and noticed that measuring block 26, which shows the voltage to the knock control cylinders 1,2,3,4, has a reading of 0.156v for all of them except cylinder 1 - which is zero.

I don't have any fault codes but have noticed the car seems a bit flat above 6500rpm, hence why i plugged VCDS in.

Any of you guys have any thoughts or experience with this at all please, or even better manage to check your car to see what values you have? I have just had a carbon clean at Unit 20 so hope its not a faulty knock sensor as the manifold will need to come off again. I understand that 2 cylinders share 1 knock sensor though.

Thanks

Abby.

Re: RS4 B7 VCDS Group 26 Knock Control Cylinder Voltage

Posted: Mon Oct 12, 2020 6:07 pm
by axnjaksn
Did you ever get this sorted out?? Chasing a fault code for knock sensor G61 and timing pull on all cylinders