AFJuvat-you were correct. I eventually ended up with a 1123, 1125, 1128, and 1130 codes. Went to a proprietary pay diagnostic site (available to shops) and found that there was a bulletin concerning these specific codes. They indicate a lean condition created by a leak in the oil filler hose between the crankcase and the service unit. This leak causes air to be sucked into the crankcase causing the lean condition. Thirty-eight bucks for the part, several hours of labor, presto!
Now I need to figure out what's wrong with my driver's side window......
