Knock control voltage for CBZB 1.2 TSI low power

[etz2k]

Did you check the TSB’s, or did you check on the engine ECU part number? Because engine ECU updates usually change the part number as well so a search on the current part number is expected to give you no info.

I checked with the VIN in ETKA, if the ecu is replaced with a newer part number, but it's still the same

03F 906 070 HK Steuergerät für Ottomotor CBZB PR GOC+7MQ,7MJ+ 7L3 785,00 €

I also checked if a new SW version is available, but there is only the same (5471) flash file

And to found out if there is a TPI (Technische ProduktInformation) he should go to a dealer, because i must also ask a friend to check it at work.


And if @silver38 say he always use gasoline with 95 octan or more and no "Waschbenzin", i think it's a false detection for some reasons or if it's really a knock event there must be something wrong with the combustion process of the engine.

So i would first drive and check in VCDS if the detection of the knock event is plausible and if the sensor, the plug and the wiring is OK.
But if he has no experience, maybe it's better to go to a work shop, because it's often hard enough to find the fault if you can drive and touch the car, but from the distance i don't kow...

 

[silver38]

Thanks for your help trying to resolve my problem. I'm back home now for 2 weeks. My neighbour has a Skoda Rapid, not sure of the engine but if it's a 1.2TSi CBZB I hope to scan it tomorrow and record what the knock sensor voltages are.