You may have had a false alarm. The light being on is an emissions thing for the most part. If it stored the codes, it may be more involved or repetitive.

I have had it do that only once with out the codes though. I ended up just resetting it by unplugging the small red wire from the battery to the terminal on the fender for a moment.

We had a cold snap here and I think the 0-2 sensor just did not warm up fast enough or EGR valve was out of specification. It has never come back on. I do not use the full-blown and over priced heated sensor because I have mild weather most of the time.

If it does it again, I would look for an air leak from a cracked vacuum hose or a bellows hole.

With those lousy codes, you have no idea how long it was unhappy, let alone know where. It could have been only for a span of a few milliseconds.

Patience and timeouts, their reserved for the games, we make for ourselves.
Phil

A thorough cleaning of the grounding points on the manifold, then as pageda, indicates.

Duane

Pull fuse 6 for a few seconds to clear the codes, then see if they come back.

If they do check the vac line on the fuel pressure regulator for gas or odor.

Make sure the O2 sensor is plugged in.

Do you get any codes in socket 6 of the OBD module?

Dan