Folks - I’m reviving this thread and would appreciate some help/advice from your good selves.
I have the “Check Engine” alarm going off on my 2010 R29 6BY2-260 Yanmar. It sounds prior to engine starting (half key turn) and also intermittently but regularly while underway. No reduction in engine performance.
I’m in Vancouver, BC. I’d like to know what the code is behind the “Check Engine” to know what sensor is playing up.
I’ve spoken to all major Yanmar shops in the lower mainland (5 of them). Surprisingly, none of them have the diagnostic computer for the BY, including the largest Yanmar shop who sent a tech to the boat but he couldn’t do anything as he didn’t have the diagnostic equipment. Finally found one (after weeks of calling around including Vancouver Island) who claims to have the diagnostic computer, but they can’t see me for 4-6 weeks (despite me politely asking to slot me in for the brief computer diagnostic sooner). We are year round active boaters (300+ engine hrs annually), and this is quite painful with us cancelling several trips if I can’t resolve this sooner.
My troubleshooting has involved replacing all my filters (including primary water separating fuel filter), but alarm still blares “Check Engine”.
Questions/queries from me:
1. I see some comment on this forum about the Yanmar interface giving more insight into error codes. I can’t see anything beyond “check engine”. If there is any button sequence that will get me more without the tech diagnostic computer, please let me know. I’ll look at it regardless
2. I see comments re the oil pressure sensor sender. Would this throw a “check engine” alarm or rather an “oil pressure” alarm? Would this also sound prior to the engine firing up (which is happening in my case). Trying process
3. I’m about to embark on this grounding search as further trouble-shooting (as discussed in this thread). What am I specifically looking for? Simply loose connections, unplugging and re-plugging in? Should I be doing this with engine off (which is my assumption) or is there anything I can troubleshoot while the alarm is on (even if half ignition with alarm sounding but engine not firing). My assumption is me fiddling with connections with engine off, with wife at helm turning ignition half way to check whether alarm is addressed after each fiddle. Any more efficient ideas would be welcome.
4. When folks mention “re-grounding” what does this entail?
5. I see some other threads mentioning a possible issue others have experienced with screen mesh on fuel tank pick-up line clogging. How easy is this pick-up line to access on the 2010 r29 tank? To trouble-shoot whether this might be it without pulling it all out, is a blast of air reversed down the line into the tank a possibility to ensure the mesh is temporarily cleared (then re-priming) an option? If it was to resolve the alarm then dive deeper into access to pick-up line and fuel polishing etc.
6. Let It Be - I’m very sorry to hear about your journey with that module. Very painful. What error code were you experiencing with it prior to the upgrade? “Check engine” or was it showing more when the tech plugged the diagnostic in? Was alarm constant, or intermittent in your case?
Clearly I am aiming to get this resolved asap and I’m frustrated that the techs thus far haven’t been able to help diagnose (and at best I’m still 4-6 weeks away from it being looked at by a Yanmar tech who apparently has the computer), and any suggestions would be most welcome.
Many thanks in advance for your responses.
Scott
