Yesterday I reversed my 1996 Subaru Outback (manual transmission) out of a perpendicular parking place on a hill, swung around forward and coasted down the hill. Near the bottom, I let out the clutch out without realizing I was still in reverse gear. It made a not-so-awful noise (sounding rather like engine braking) and I very quickly put it in neutral. I immediately smelled a fairly strong gasoline/exhaust aroma and the engine stalled. The Subaru restarted without trouble, but the check engine light was on. Everything appears to function normally now, and I’ve reset the engine light by disconnecting the negative terminal of the battery for a few minutes.
Have I likely damaged anything? Is there anything I should check? Should I have tried to read the diagnostic code instead of sticking my head in the sand while singing la-la-la at the top of my lungs?