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helmutkoch53

Lexus UX knock sensor issue

My 2019 Lexus UX hybrid has a check engine light. Mileage is at 223831 km. I've noticed higher fuel consumption and uneven idling. Suspect it might be the knock sensor, possibly a bad connection.

Summary of the thread

A 2019 Lexus UX hybrid exhibited a check engine light, increased fuel consumption, and uneven idling, leading to the suspicion of a knock sensor issue, possibly due to a bad connection. The problem was confirmed to be a faulty knock sensor connection, which was resolved at a cost of 95€.

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4 comment(s)

victoriafuchs18

Sounds familiar. Had similar symptoms on my old Opel Astra. The warning light was on and the engine performance was degraded. Have you checked the sensor's cable and plug?

helmutkoch53 (community.author)

Yeah, I checked, but couldn't spot anything obvious. What was the cause in your case?

victoriafuchs18

In my case, it was also a defective cable connection that caused the issue. I'd recommend a workshop to properly diagnose the problem.

helmutkoch53 (community.author)

Thanks. It ended up being a faulty knock sensor connection, just like you said. Cost 95€ to fix.

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LEXUS

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UX