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YBR 125 Fault codes 12 & 33

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Hi Everyone,

(newbie here and glad to be here) 

I was wondering if anyone has rectified the following fault codes :-

12 (Crankshaft position sensor)

33 (Igntion Coil)

I have checked for and breaks in the wires etc and have repaired any that needed it, however I still can’t get the bike to start. I have checked the igntion wires black/black and white and jumped these across but still won’t atart.


any ideas ?



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Well if both those things are bosted you'll never get it to run. However I'd say it's unlikely that both components would break at the same time.

Do you have a wiring diagram? I'd be looking for a common connection between the 2. I'm assuming your battery is in good nick and fully charged?

Does the engine turn over off the starter but not fire?

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Yup, got the diagram.

yeah the battery is fully charged and the starter try’s to turn it over but there’s no spark at all to the plug . . 


Ive checked the crankshaft position sensor and has 268ohms resistance so all seems good there ?

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