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johannaberger1

Skoda Kamiq knock sensor issue

I'm starting to get seriously annoyed with my 2022 Skoda Kamiq. It's got a gasoline engine and only 55157 km on the clock, but the check engine light keeps popping up. I've noticed a drop in fuel efficiency and the engine idles rough sometimes. I scanned the codes and it's showing a defective knock sensor. I suspect it's just a dodgy cable or plug connection, but honestly, I'm not sure where to start. Anyone else had this?

Summary of the thread

A 2022 Skoda Kamiq owner reported issues with the check engine light, reduced fuel efficiency, and rough idling, linked to a defective knock sensor. The problem was suspected to be due to a faulty cable or plug connection. It was suggested to inspect the sensor's wiring and connector for any loose or corroded connections. Ultimately, the owner took the car to a garage, where the knock sensor was confirmed as the issue and replaced, resolving the problem.

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4 comment(s)

josephmeyer6

I've experienced similar car problems with my Kamiq, although I don't recall the exact build year. The symptoms you describe, especially the malfunction indicator lamp illuminating along with uneven idling, strongly suggest a potential issue with the knock sensor. The ECU retards ignition timing when knock is detected, and that impacts fuel efficiency. Have you checked the sensor's wiring and connector? A loose or corroded connection can mimic a faulty sensor.

johannaberger1 (community.author)

Thanks for the reply! I did check the connection and it looked okay at first glance, but is there anything specific I should be looking for? Maybe a way to test the signal from the sensor?

josephmeyer6

Given that you've already visually inspected the connection, further diagnostics are advisable. While signal testing is possible, it requires specialized equipment and knowledge. Considering the symptoms and error code, and your expressed concern about fuel efficiency and engine knock, a visit to a qualified workshop is highly recommended. Continuing to drive with a potentially malfunctioning knock sensor could, in theory, lead to pre-ignition and engine damage. The repair cost you mentioned seems reasonable for a knock sensor replacement.

johannaberger1 (community.author)

I really appreciate you confirming this. I took it to a local garage, and you were spot on, it was the knock sensor. 95€ and I'm back on the road. Thanks for the help!

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SKODA

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KAMIQ