I had my CPU replaced on my 2001 dodge Dakota during the summer. I just bought a simple OBDII scanner, and when I checked the readiness of my system, the O2, CAT and EVAC were all coming up N/A instead of ready or not ready. I read that that means my CPU does not support it...Any thoughts.

 

Correct. Nothing to worry about.

 

Thanks. It is running fine. I was just worried about my upcoming California Smog check.

 

N/A is "Not Applicable". So, smog test shouldn't whine about it either.