karenshadow3

S90 Knock Sensor Issue

My 2021 Volvo S90 hybrid is acting up. The check engine light is on, gas mileage is terrible, and the engine idles rough. It has 138932 km. Could it be the knock sensor? The plug looks okay.

A 2021 Volvo S90 hybrid is experiencing issues such as a check engine light, poor gas mileage, and rough idling. The owner suspects the knock sensor might be the cause, as a scan revealed a related error code. Another owner with similar past issues confirmed that the knock sensor was indeed the problem and recommended professional servicing to resolve it.

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4 comment(s)

That sounds familiar. I've got an S90 too. I had similar symptoms last year - check engine light, poor mileage, and rough idling. Did you scan the car for error codes?

Yes, I scanned it and got a knock sensor code. I'm wondering if it's a simple fix before I take it to a shop. Was it definitely the knock sensor for you?

Yep, the knock sensor was the problem. I didn't mess with it myself, just took it to my mechanic. Letting a pro handle it is probably best.

Thanks for the advice! I was hoping for a quick fix, but I'll book a service. I was quoted about 95€, so hopefully that sorts it.

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VOLVO

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S90