ckmdvmatx wrote:
New member here - 2015 T23. Service required alarm + boat going into engine idle after starting to tow a surfer this weekend. After troubleshooting with a friend who is a PCM certified mechanic and chatting with TX Malibu service, probably the Exhaust Manifold Water Temp sensor problem that has been mentioned on other threads. We disconnected the positive battery terminal for a few minutes then reconnected. Service alarm was gone and boat ran just fine last night. I am planning on having some other work done in a few weeks and the PCM flash is supposed to happen then. Not sure if the battery disconnect will work for you but just thought I would mention it helped in our situation. Good luck!
This worked for me too. Was in limp mode with alarm. I just turned the battery switch off can't remember how long. Turned the switch back on and has been fine. Was likely the Exhaust Manifold Water Temp sensor problem in my case too. 15 A22.