knock sensor



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I have a knock sensor error listed as "bank 1 or single sensor".
Does anyone know,
1 - How many are there
2 - Where is it / they
3 - How much it should cost
4 - What does it do, is the error with the sensor or is the sensor detecting a problem in the engine.

The car feels extra spritely at the moment (must be the cold air), so hopefully no problem.

many thanks for any help
 

BenG

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There is only 1 ‘knock’ sensor. I’m almost certain it’s the sensor fitted into the engine block that’s located just above the oil filter. It has a plug connected to it with a red and white wire. Check the plug is secure first of all and that the connections are clean, check the wiring as best you can. Failing that I would suggest changing the sensor. 8200680689 appears to be the part number you’re after, I can’t 100% confirm that though.

https://www.renaultpartsdirect.co.uk/parts/popular-products-2/knock-pinking-sensor/
 
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Thanks for that, i will check the wiring first, as this is the second time the error code has appeared, so it is pretty intermittent.
 

BenG

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If the sensor has failed then the engine will still run ok, however, if there’s any knocking it can’t be rectified. The sensor is there to detect the knocking, the feedback I believe is linked to the ECU which alters the ignition timing in response.
 
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so is the sensor telling me there is a knock or is it telling me that it is broken
 

BenG

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I’m not entirely sure.

I don’t think a fault will be triggered if knocking (or excess knocking) is detected. The sensor is there to monitor it and the feedback is used by the ECU to rectify it. I think the fault occurs when there is no feedback from the sensor which would indicate a failed sensor or open circuit in the wiring.
 
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That's good info. I've checked the wiring and cleared the fault. If the light comes back on I will swap out the sensor.
£30 at euro car parts at the moment so I may do it anyway.

Thanks for the help, awesome as always.

Sent from my SM-N935F using Tapatalk
 


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