Do these codes mean anything to you, none starter

[Bradders8134]

I found the Co sensor on the exhaust I believe off when connected it brought up the left fule sensor??? Help me get it running again

[________]

Hall sensor is the crank position sensor.

Try to see if the connectors are ok. They may have degraded (disconnected/oxidized) or were chewed by wildlife. Alternatively the sensor itself might be faulty.