Volvo penta check engine message

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   Over the day I managed to talk to a technicial at our local Volvo Penta dealership - according to him, MID 128 PID 51 FMI 4 refers to throttle position sensor (essentially a potentiometer) fault. Luckily, it's easily accessible so will continue troublehooting. The engine seems to be running fine again but the error persists.

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raunzz Members Profile Send Private Message Find Members Posts Add to Buddy List Sub Lieutenant Joined: 14 July 2025 Location: Estonia Status: Offline Points: 2	Post Options Post Reply Quote raunzz Report Post Thanks(0) Quote Reply Posted: 14 July 2025 at 18:13
	Over the day I managed to talk to a technicial at our local Volvo Penta dealership - according to him, MID 128 PID 51 FMI 4 refers to throttle position sensor (essentially a potentiometer) fault. Luckily, it's easily accessible so will continue troublehooting. The engine seems to be running fine again but the error persists.

Black Diamond Members Profile Send Private Message Find Members Posts Add to Buddy List Admiral Joined: 24 October 2015 Location: Newport, RI, US Status: Offline Points: 1275	Post Options Post Reply Quote Black Diamond Report Post Thanks(0) Quote Reply Posted: 15 July 2025 at 12:30
	Note that (according to Volvo) you need to acknowledge the fault (via the process Wayne laid out earlier) before it will clear. Even if you have fixed the problem.
	Rick S/V Black Diamond Hanse 575 Build #192, Hull# 161 Newport, RI



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