4havnfun 0 Report post Posted September 20, 2019 I have a 2009 340 Monterey sport yacht with Volvo 5.7 gxi motors. I’m getting a caution check engine on my starboard engine, it comes on after about 10 minutes at running speed. All engine indications are normal and engine is running perfectly. When I switch on the oem mode I get the fault codes ( mid 120, Sid 90 , fmi 4 ) I cannot find these codes anywhere, in manuals, on line or from Volvo. Does anyone know where I can find the codes explanation or know what they mean? Thank you! Jerry Share this post Link to post Share on other sites
su2skelsey 0 Report post Posted September 23, 2019 I used this in the google search string. fault codes mid 120, Psid 90 , fmi 4 volvo penta 5.7 Try, this PDF. http://engine-manual.com/en/index.php?controller=attachment&id_attachment=224 It was the three result in the search results. Hope it helps. Share this post Link to post Share on other sites