I have replaced the purge valve, If i have made the proper repairs Will the codes clear right away or do you have to drive it for a certain amount of miles?
This is an old question but useful so I'll answer it.
Yes, in almost all cases the codes will clear themselves eventually after repair. The best method is to clear them with a scan tool. Some people say to disconnect the battery for 10 minutes or so, but this has a number of disadvantages---one, it might not work depending on the type of ECU and whether there are capacitors in place that might supply power to the ECU anyway; and two, your car will have to relearn radio pre-sets as well as some of your driving habits.
Some codes would require a more sophisticated scan tool than the $19.95 variety.
Answers
MODERATOR
Need help getting around? [email protected] - or send a private message by clicking on my name.
Tell everyone about your buying experience: Write a Dealer Review
Yes, in almost all cases the codes will clear themselves eventually after repair. The best method is to clear them with a scan tool. Some people say to disconnect the battery for 10 minutes or so, but this has a number of disadvantages---one, it might not work depending on the type of ECU and whether there are capacitors in place that might supply power to the ECU anyway; and two, your car will have to relearn radio pre-sets as well as some of your driving habits.
Some codes would require a more sophisticated scan tool than the $19.95 variety.