Click here to download my DTC (Diagnostic Trouble Code) guide for your car (1MB, PDF format). As Doc said, you need a scanner, or at least an LED blink code reader, to see what codes are on the other computers. The built-in LED only shows very vague, generic codes from the DM (diagnostic module). Code 17 on the DM means "Data exchange malfunction between individual control modules", which - also as Doc said - means nothing by itself.
