Motorcycle Questions? Ask a Mechanic.
Hello, the first step in diagnosing this is going to be removing the power commander. Many times I've seen them go out and effect starting. Let me know how it goes and we can work further if needed.
Yes, it will star t and run without the O2's. The check engine light will likely come on and it may urn a little rich.
1. I would not ride it without working O2 sensors
2. If it's not the power commander we will need to look into the crank position sensor, ignition module and associated wiring.
I'll be around tommorrow, let me know how things go