2014 GS Rev Limited at 4000 RPM... Help...

[pianomanla]

Hello all!

My son and I were out riding yesterday afternoon and midway through the ride, his ‘14 GS would no longer allow him to rev beyond 4000rpm. After lunch, his check engine light and service indicator came on and that is when the hardline rev limit started. This bike is new to us, with just over 13k miles on the clock and a pretty good service history, but as the low miles for the age show, it wasn’t ridden much. (I ride a ‘15 RT that I bought new and it has close to 60k miles on it).

Is there anything I can check today, as the dealer is closed until tomorrow, or is this a “have to bring it to the dealership” sort of issue?

Thanks in advance!

 

[Omega Man]

Is it the original battery? Did this occur after a start that was a bit different than usual?
OM

 

[lee]

The bike may be in Emergency Operation Mode (Limp Mode)

 

[pianomanla]

I think you are right... but why...? The start yesterday was fine. Saturday evening, first start in a few weeks of sitting on the side stand, there was some grey smoke from the exhaust, other than that, nothing out of the ordinary.

The bike may be in Emergency Operation Mode (Limp Mode)

 

[20774]

Here's a past thread where the limp mode was discussed:

https://forums.bmwmoa.org/showthread.php?93036-Serious-problem-and-need-help-finding-solution

 

[pianomanla]

Thanks for the link! But I think there issue is different from ours. My son rode the bike home over 100 miles and everything is fine, as long as the rpm's are less than 4000. 4000rpm, in any gear produces the same "stuttering" that I would normally associate with hitting the redline limit.

Thanks for the comments... any other ideas? Am I asking the right questions, or is there additional information that might be helpful?

Here's a past thread where the limp mode was discussed:

https://forums.bmwmoa.org/showthread.php?93036-Serious-problem-and-need-help-finding-solution

 

[pianomanla]

Update: Camshaft sensor failed

Hello all...

The report from the shop is that it is a failed Camshaft Sensor. Not sure if that means something else as a deeper issue, or if it was indeed just the sensor. Anyone else have this issue?