The KSDS is suppose to detect extra knock if the rod bearings get too worn out - knock shocks that the sensor picks up from the rod bearings. Suppose to warn the driver before the rod seizes, fails and goes through the block. I'd think some kind of dash light comes on or flashes ... at least the Check Engine light.I don’t know. I didn’t research the KSDS and not familiar with its relationship to oil consumption.