scan tool readiness codes

[bob]

I have a 2010 Toyota corolla I have readiness codes stored in the car computer what are these codes and how do you get rid of them. Their are no trouble codes or check engine lights on .

Topic

[Andrew Phillips]

You don’t really want or need to get rid of them. They are just indicators that the car ran its self-tests and passed. The purpose of readiness monitors in a car is to self-test the car’s emission systems. Readiness monitors are routines that observe the performance of specific vehicle emissions control systems. The output of readiness monitors identify whether the car’s computer has completed the required tests while the car is being driven. The presence of the readiness monitors also indicates that the engine computer has not been recently cleared.

[Author]

Replies