Hi Everyone... I have a 0600 error code in reader and wonder what to chedk or replace. procedure, etc. ...any info out there? I recently replaced my knock sensor and vehicle speed sensors, after which the check engine lite was off, but did a code reader check anyway, and the 0600 code came up. 1996 maxi, 130,000 miles

 

Have you read with this reader/car before? I'm not sure as I haven't done much obd stuff, but serial communication link malfunction sounds like the obd isn't getting a proper connection to the car, not anything actually wrong with the car itself.