1999 Buick Regal has codes kwp2000 and iso9141 what does this mean?

Question

My 1999 Buick Regal has the codes: kwp2000 and iso9141- what do these codes mean?

Answer 1

These are not code what they are are communication protocols, This is a communication speed, What happens when the scan tools make a connection to the OBD port it matches the communication speed at which your ECM communicates with,  the scan tool.