magdalenaeule1

Peugeot 107 Knock Sensor Issue

I've got a 2007 Peugeot 107 with a gasoline engine and 231288 km on the clock. The check engine light is on, fuel consumption has increased, and the engine idles unevenly. I suspect a defective knock sensor, possibly the cable or plug connection. Has anyone experienced similar issues and can offer diagnostic advice?

4 comment(s)

Hey there! I had a similar issue with my 107. The check engine light was driving me nuts, and the car just wasn't running smoothly. It turned out to be the knock sensor. Did you check the wiring to the sensor itself? Sometimes the connector gets corroded or damaged.

Thanks for the quick reply! The wiring is my primary suspicion. Could you describe the specific symptoms you observed? Also, did you do any specific diagnostics before replacing the sensor? I want to avoid unnecessary costs if possible.

No worries, happy to help! Yeah, my symptoms were pretty much the same: check engine light, rough idle, and the fuel economy went down the drain. I tried cleaning the contacts on the sensor and the connector, but it only helped for a little while. Eventually, I gave up and took it to my usual workshop. They confirmed it was the sensor, so I just had them replace it to be sure.

I appreciate you confirming this. Given your experience and the similar symptoms, I'll visit my workshop for a diagnostic assessment. A replacement sensor and labor should be about 95€.

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