Cancelling CEL Light and Codes

Question: If I cancel all Codes and the CEL light goes off and stays off, will the car pass emissions control, or will cancelling the Codes create a problem in that regard.

Thanks all.

... require that the vehicle cycles several times with the CEL off.
You can't just erase it and go for an emissions test.
Happy Boxstering
Pedro

Pedro Bonilla
1998 Boxster 986 - 311,000+ miles: [www.PedrosGarage.com]
PCA National Club Racing Scrutineer - PCA National HPDE Instructor - PCA Technical Committee (Boxster/Cayman)

---

Racecar spelled backwards is Racecar

"Racing is life. Anything before or after is just waiting" ... Steve McQueen as Michael Delaney in "LeMans"

"If you wait, all that happens is that you get older"... Mario Andretti

"Being second is to be the first of the ones who lose" ... Ayrton Senna

Clearing the codes and extinquishing the CEL, or just clearing the codes even if the CEL is not on, resets among other things the readiness monitor tests to incomplete.

In CA, the rules allow only 2 (any 2) of the supported readiness monitor tests to be set to imcomplete. Any more than 2 and the vehicle fails its smog check.

After you clear the codes, extinquish the CEL, you need to drive the car some. I have found about a 30 mile drive of a mixture of cold start, idling, city driving, some cruising at a steady speed will have the readiness monitor tests set to complete, unless of course the DME stumbles upon the problem that had the light on in the first place. In which case it will turn on the light again and log the appropriate error codes.

Sincerely,

MarcW.