67-1 is the lift height sensor, check the cable conection between mast and body, you can disconnect the sensor and see if any other error pops up. There are 3 wires. (normaly open and normaly closed)
You can,t clear the errorlog, when error is fixted the display will not show the error.
This is ONLY to be used to report flooding, spam, advertising and problematic (harassing, abusive or crude) posts.