Honda accord 7th geneartion
 

Hi,
I have engine warning light on.
Code indicates knock sensor which has been replaced but warning light still remains on.
Any suggestions please ?

Check the wiring to and from the sensor

engine warning light
 

Thank you for swift response. I should have stated that the wiring has been checked and found to be okay.

is your knock sensor an aftermarket, it it is try honda part.

What is involved with the knock sensor? ECM, wiring, sensor, the thing being sensed
If code says knock sensor then usually means the sensor or the wiring has an issue.
Sometimes connector pins have fitment issues. Other times, corrosion. Grounds.
Sorry, this is all I can offer with the limited information I have.

I changed mine with an aftermarker sensor. It worked for about 1k miles and then light came back on again. After reading the reviews of the aftermarket sensor, This is a common problem.

after market sensor may look the same and so will the wires but they are not built for Honda cars. Honda asked the same manufacture to build the same type sensor using the honda specs so some will work but for a short time.