I figured I would post this on here since we all enjoy helping each other even though the boat is not an SC product. So our neighbor at the lake house has a 2015 G21, he pulled it out yesterday to take his girls surfing and he said it ran fine for a few mins but then it started surging and died. He got it started again but noticed the boat was idling at about 2,000 RPM and when in gear would not go over 5mph so was basically in a limp mode. He got it back on his lift shut it down and fired it back up and it threw the following code:

DTC 1155: Closed-Loop Gasoline Bank1 High

I looked it up and it appears that it is a faulty O2 sensor.....is that correct? If so will just replacing the sensor fix his issue?