Engine trouble warning light with no Error Code?

[CSA]

Hi. My 2012 XT1200 has been having a bit of trouble these last few days-on Friday last week riding home from work the orange waring light came on and there were no other symptoms (engine behaving normal). When I investigated on Saturday morning the orange warning light didn't come on when I started it up 3/4 times. I didn't do anymore. This morning riding to work, after about 23 miles I had about 20 seconds of what felt like irregular fuelling with "all or nothing" from the throttle then the orange warning light came on in the instrument pack and the bike ran "normal". After stopping, leaving for about 30 minutes the light does not come back on again. I have looked at the Service Manual and my understanding is that with the orange waring light there should also be an Error Code in the display but I didn't see one when the light was on(maybe I missed it.?)
First question: can anyone advise if an Error Code comes in the instrument pack without it bike having to be set into diagnostic mode first, please? Second question: can anyone advise a possible fault or what to do next(I'm not keen on repeating this mornings experience on the motorway again!)

 

[Bigbore4]

Here's how to get into diagnostic mode. You will need a service manual to get tg get the descriptions.

https://www.yamahasupertenere.com/index.php?threads/engine-light-on-during-decel.24934/post-345464

 

[Boris]

If you manage to get the codes, put them on here. If I’m about I’ll look them up.

 

[Squibb]

Just guessing - bad fuel, or a coil stick/ 2. Could be water has crept past the coil seals - has it been power washed or out in heavy rain?

Sorry OP, couldn't resist - let's do this properly & see the codes first.

 

[Dwido]

Hi. My 2012 XT1200 has been having a bit of trouble these last few days-on Friday last week riding home from work the orange waring light came on and there were no other symptoms (engine behaving normal). When I investigated on Saturday morning the orange warning light didn't come on when I started it up 3/4 times. I didn't do anymore. This morning riding to work, after about 23 miles I had about 20 seconds of what felt like irregular fuelling with "all or nothing" from the throttle then the orange warning light came on in the instrument pack and the bike ran "normal". After stopping, leaving for about 30 minutes the light does not come back on again. I have looked at the Service Manual and my understanding is that with the orange waring light there should also be an Error Code in the display but I didn't see one when the light was on(maybe I missed it.?)
First question: can anyone advise if an Error Code comes in the instrument pack without it bike having to be set into diagnostic mode first, please? Second question: can anyone advise a possible fault or what to do next(I'm not keen on repeating this mornings experience on the motorway again!)

Check the intake air pressure hose.

 

[CSA]

Hi Guys. Thank you for all of the help-much appreciated! I see that if there are more than 1 error code that nothing is displayed and the codes have to be retrieved. I had 6 codes and there didn't seem to be any validity in them because when I went through the diagnostics all seemed to be to spec/in range- I have a Service Manual. Last night I cleared the codes and did 28miles road rest with no apparent issues. But this morning on my way to work did 9 miles and then the engine started surging and after maybe 1/2mile the orange light came on and then the engine was running ok (but with the orange light). After leaving a while the orange light is off and all seems ok? I will check to see if there are any codes later and post an update.

 

[CSA]

Check the intake air pressure hose.

Did the split air intake pipe show as an error in Diagnostic mode?

 

[Dwido]

Did the split air intake pipe show as an error in Diagnostic mode?

Sorry ,i don't remember.
But change the pipe .
Even if you can not see any problem with it.
Most probably its dry and cracked after so many years.

 

[CSA]

OK. I have an update-I now have one Error Code stored:13(in d:61 the number13 is displayed). From the Service Manual I have code 13=Intake air pressure sensor: open or short circuit detected. In Diagnostics I entered Code No. d:03 and I followed the procedure, and the value changes with the throttle opening and closing so apparently the sensor is working correctly. The value is 101 with the throttle closed.
I noticed that d:03 also has Error Code 14:Intake air pressure sensor: hose system malfunction. In d:03 the displayed value is 101(kPA?). Where I live is about 39 meters above sea level so the pressure reading seems ok(typically 102kPA). The hose attached to the air pressure sensor was not blocked, was attached securely at both ends and I can't see any cracks in it. I have also attached a photo of the hose. The hose being the fault seems unlikely but please advise?
This level of fault finding is a new experience to me. I have tried to spell out exactly what I have done so that the more experienced of you might see if I have gone wrong(I might have got the wrong error code?). At the moment, I am confused about the diagnosis because I think that the pressure sensor is working correctly(at least while the engine is off and the bike is not being ridden), but there is a fault that can appear while riding. I haven't changed anything, taken apart or done any work on the bike recently. Last work was to change the oil and oil filter about 4 weeks ago. Mileage is about 30K now. No jet washing heavy rain or other abuse-just normal daily commute to work and weekend rides. What are the thoughts on what the fault is/what to investigate next, please?

 

[gunslinger_006]

This sounds like a post maf vacuum leak in a car. Definitely replace that hose and verify no other vacuum leaks are present.


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[CSA]

This sounds like a post maf vacuum leak in a car. Definitely replace that hose and verify no other vacuum leaks are present.


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Thank you. I will change the hose. Out of interest, what is "maf"?

 

[Tenman]

Mass Air Flow

 

[gunslinger_006]

Thank you. I will change the hose. Out of interest, what is "maf"?

Sorry its the mass air flow sensor. In cars this tells the engine exactly how much air the engine is taking in. If air comes into the intake after the maf, it results in lean misfires due to the air to fuel ratio being too high. This produces surging power and a rough idle most of the time.


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[Jlq1969]

I understand that the S10 sensor, "is not an air mass sensor" ... it is a vacuum sensor inside the filter box ... and with that vacuum, it calculates the mass and corrects the pressures on the sea level

 

[gunslinger_006]

Exactly. So a leak in the hose could play havoc with that sensor.


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[CSA]

Once again, thank you all for your helpI have changed the hose and cleared the codes. Stars and idles fine(but it only failed after a ride), so I will take it out this afternoon when I get back from work and will post an update

 

[pilleway]

Once again, thank you all for your helpI have changed the hose and cleared the codes. Stars and idles fine(but it only failed after a ride), so I will take it out this afternoon when I get back from work and will post an update

Hi! good morning CSA
How do you clear codes? I understand that with th killing switch, can you describe th procedure!
Regards
Have a nice friday and be prepair for the weekend.

 

[CSA]

Hi! good morning CSA
How do you clear codes? I understand that with th killing switch, can you describe th procedure!
Regards
Have a nice friday and be prepair for the weekend.

Hi Pilleway. I used the engine off switch. Please see the attached screen shot of the procedure.

 

[CSA]

After the road test I can confirm that the fault is still there! I rode for 3.5 miles and the engine stopped while I was in traffic(no warning lights). It wouldn't start for 3/4 tries but on about the 4th try, the orange warning light came on and it started. I rode home ok with a slightly rough idle and the orange light on.
This morning Error Code 13 is back and in d:03(no others) the display is 101 (throttle closed)and it varies up and down when using the starter and turning the throttle-so according to the diagnostic procedure the sensor is ok(?), and the orange light is off and the engine starts and idles ok.
I have the bike booked into my local Yamaha dealer for them to repair on Monday.

 

[Squibb]

Strange - I guess you need to swap out the Inlet pressure sensor. Something is causing it to throw an error, seemingly once hot.

I assume the airbox, filter & inlet are clean/clear. Nothing unusual in there that may upset the pressure sensor.