Resetting Emission Control

Thanks, Bruce for your response. Please help me understand, however. What refers to the O2 sensor? 1290, 1166, or 1167? Another Honda tech says he doesn't know what 1290 is - I wonder how he could not know.

You say it might keep coming back - that implies to me that something was not done correctly. If the repair shop goes to the dealer with the code their scanner brings up, and the dealer sells them the part to make the repair, and they install the genuine Honda part, what might have been done incorrectly?

The repair shop is highly recommended, and has given us good service for years, so I'm inclined to think they have not made a mistake.

Also, are you implying that even if I pay the dealer to reset the system, the problem will still return?

Bruce,

You want to "know if they are real." I assume you want to know if these are codes that came up AFTER the 1290 part was replaced. I also assume that to "clear the computer" without going to the dealer and paying $73, I would need to disconnect the battery for a while, reconnect the battery, and then go to Autozone or similar place and have the codes reread.

If this is what you mean, I'll do it and see what happens. If the check engine light comes back on, I'll report back here with the codes - OK?

Oh, yes, the car runs fine - no detectable change in its operation even before the repair was done.