.IL OFF CAT. OT RDY/EVAP NOT RDY/ 02 OT RD Y/ HTD 02 NOT RDy ?

Question

Mil ready Ness all have been replaced still showing not ready what could cause this.

Answer 1

Monitors not ready, when the key is turned off the , is the battery good. To set the monitor you have to meet a certain drive criteria. most emission test would tell you drive 100 miles, they reason they say this is somewhere in the 100 miles you will somehow meet the drive criteria.