My Mercruiser Black Scorpion DTS gave me a "Starboard Oxygen Sensor Malfunction" alarm today. I'm pretty sure it's aft of the cat becasue the engine is running fine and the info goes on about emissions.
Here's the question: If I replace the sensor, and it remedies the problem, will the code clear and the alarm stop, or do I need to drive clear to the other side of the lake, take the boat out and drag it 40 miles just to have a tech plug into the computer, tell me, "yep, that's the problem" and then charge me big $ to clear the code?
Thanks.
Sam