The other day I had my 2001 Pro-Line 25 Sport out and when I was idleing at low speeds or sitting in neutral I had a fault pop up on my gauge. Throttle Sensor Fault, then it would say LimpHome but when you gave it some gas it would go off. I have a 225 XL Mercury with 180 hours on it. Someone told me it might be the TPS is dirty or going out. I am new to boats so I am unsure.