s.ferrecchia
Newbie
- Joined
- Jan 11, 2025
- Messages
- 1
- Age
- 63
- Location
- Massachusetts
- Country
- USA
- Snowmobile
- 2019 yamaha sidewinder SRX
Sidewinder SD 85 alarm. What causes this alarm and how do I fix it? During this alarm it would continue to run fine but would not stay running during a cold start.
1nc 2000
Lifetime Member Tim
- Joined
- Feb 26, 2010
- Messages
- 3,125
- Location
- Marquette, MI
- Country
- USA
- Snowmobile
- Yamaha FX Nytro RTX SE
SD 85 is oil pressure switch.
SPM
Pro
- Joined
- Nov 18, 2018
- Messages
- 152
- Age
- 57
- Location
- so. mn
- Country
- USA
- Snowmobile
- 2018 Sidewinder L-TX LE
Hopefully it's a faulty oil pressure sensor however my buddy had this same SD85 code after a very cold morning start up. After verifying with a manual gauge 0 oil psi it ended up being the oil pump drive gear spinning on pump shaft. The bad news is it's a PITA to fix, the good news is it's a rare problem but I did see it happen. Replaced oil pump and drive gear and problem solved.
