Can bad spark plugs cause a knock sensor code?

Yes, bad spark plugs can potentially cause a knock sensor code. Faulty spark plugs may lead to misfiring or incomplete combustion, which can create abnormal engine vibrations and noise. These conditions might trigger the knock sensor to detect false signals of engine knocking, resulting in a stored code. Thus, while bad spark plugs are not the direct cause of a knock sensor code, they can contribute to conditions that lead to its activation.