timbo;c-139646 wroteBased on the age of the car I would guess it will possibly be the breather hose for the pcv system causing a long term fuel trim code.
Oh I see..the symptoms of my car are, the light is there for the past one year, the oil temp does not rise in the panel but can feel the heat near the middle console, coolant needs topping more frequent than normal, the initial acceleration felt sluggish a couple of times a long back but normally ok...recently I changed the broken engine mount, thermostat housing and coolant hose.