NEED HELP: 2008 mercury 225 optima code!

[Aruss1984]

My engine threw this code below. I'm currently practicing and about to begin practice and unsure if it safe. Assuming not. Screenshot_20210721-072131.jpg

[SilverFox579]

It is NOT safe, that is telling you one or both thermostats are not allowing engine to reach minimum of 120° at idle. Ignoring that, and the single beep you should have been getting within 5mins of start, puts your engine at risk for a cold seize event on cylinder #6.

Your engine is a 3L and covered in that forum, please also read the Announcement at top of forum and provide the required information (serial number).

Mercury - 3 Liter & 3 Liter High Performance

[EuropeanAM]

Moving your thread to the 3L Forum.

If you would, please take a moment to review the Announcements at the top of the Forum, and be sure to provide the Required Info (serial number) when posting. Thanks!

I would strongly recommend that you get your thermostats checked NOW, before running the engine (don't exceed 1500 RPM's until addressed).