Have Toyota Questions? Ask a Mechanic for Answers ASAP
Thank you for trusting us with your questions. Which code did you have, and which monitor has still not passed?
Do you mean the catalyst monitor is incomplete?
Here is the drive cycle.
MIL is malfunction indictaor lamp, or check engine light. You will need to find a highway area capable of letting you drive non stop. It can be very difficult at times to get this to complete if you are not in a rural area. Eventually, it will complete through normal driving, but can take quite some time.