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SD-12 Code and starting issue what to do first

Nov7829

Lifetime Member
Joined
Feb 19, 2019
Messages
3
Age
50
Location
Nj
Country
USA
Snowmobile
97 vmax sx 700
I have a 2018 STX-DX 146 sidewinder that started giving me a SD-12 code with the 5500 RPM. The sled does have 18,000 miles but has all preventive work done. I replaced the battery as a first step and the unit did start fine for 15 time over two days but when I was loading it on the trailer it would only crank over but not fire and the generate the SD-12 code. Should I replace the crank position senor by itself or do both the stator and the sensor. The OEM stator is $400 so I would like to avoid that. Is it best to test the stator with the engine running instead of the OHM test?
Thanks
 

I have a 2018 STX-DX 146 sidewinder that started giving me a SD-12 code with the 5500 RPM. The sled does have 18,000 miles but has all preventive work done. I replaced the battery as a first step and the unit did start fine for 15 time over two days but when I was loading it on the trailer it would only crank over but not fire and the generate the SD-12 code. Should I replace the crank position senor by itself or do both the stator and the sensor. The OEM stator is $400 so I would like to avoid that. Is it best to test the stator with the engine running instead of the OHM test?
Thanks
Here is some reading for you.

Also if its the crank sensor you will not get it running at all. If its truly a failure(ohms test) will tell you. Don't need to be running. Its been awhile since I changed it but pretty certain you can just replace the sensor not the whole stator and sensor. With those miles I would do the whole thing.
 
I feel your pain, just went through this a couple of weeks back. Start of a week-long trip, go start it to get it off the trailer and no go, the dreaded sd-12 code. I found a dealer that had the stator so just had them install it as I didn't have all the tools required to do the job with me on this trip.
 
Its been awhile since I changed it but pretty certain you can just replace the sensor not the whole stator and sensor.
Jon as I understand it, it can be done but not an easy task. I hear it's pretty complicated replacing just the sensor.
 
Jon as I understand it, it can be done but not an easy task. I hear it's pretty complicated replacing just the sensor.
It can be done as I understand it. BUT that would be done by someone with electrical knowledge. That's not me so much beyond basics. The price is way more now then when I did it. We did the whole works. With the miles on the sled of nov7829 I think its a no brainer just to do both.
 
I feel your pain, just went through this a couple of weeks back. Start of a week-long trip, go start it to get it off the trailer and no go, the dreaded sd-12 code. I found a dealer that had the stator so just had them install it as I didn't have all the tools required to do the job with me on this trip.
How many miles was your failure at? Just curious
 


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