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Gear indicator error/CEL

9463 Views 16 Replies 7 Participants Last post by  qalus38
Hi guys,

After changing sprocket sizes the gear indicator is not working and I'm getting a check engine light.

Is there a fix for this?

2021 Ninja 650 ABS


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You need to short the clutch lever position sensor plug at the handlebars. Otherwise you get CELs / no gear position indicator after swapping to non stock sprockets. I had to do the same thing. Same hack works for ('17-19) N650 and N400. Not sure about latest gen N650 you'd just have to try. The gearing CEL will clear itself after some number of restarts. Changing sprockets does NOT affect the relative wheel speeds front and back wrt the ABS ring sensors. That happens when you use odd tire sizes.
I'm having CEL issue now code 25, can you share some photo how to short the clutch level position sensor? much appreciated
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