iQ Knock Sensor Issue

Knock sensor issues? I had something similar with my iQ a while back. I ignored it at first, thinking it was just a glitch, but the poor performance got worse. Are you sure it's just the knock sensor? Have you checked for any other codes?

Yes, I've scanned it multiple times. The only consistent code is for the knock sensor. Given your experience, did your symptoms match mine, and did the knock sensor replacement resolve everything?

Yep, the symptoms were spot on. The light, the fuel, the rough idle – all of it. Replacing the sensor should fix it. However, if you’re not confident in doing it yourself (it's a bit fiddly getting to the sensor), I'd say take it to a workshop. It'll save you the headache.

Thanks for confirming. I followed your advice and took it to a trusted workshop. Turns out it was exactly as we suspected: defective knock sensor due to connection issues. 95€ later, and it's running smoothly again.