Flashing light #1 on the display of a 2004 recon es Honda atv

How many blinks on the 1st gear light? Here's the code definitions that should be for your quad.

Code 0 (no flashes) - The system is functioning normally
Code 1 (one flash) - Electronic control unit
Code 2 (two flashes) - Shift Switch or it's circuit
Code 3 (three flashes) - Angle sensor or it's circuit
Code 4 (four flashes) - Gear position switch or it's circuit
Code 5 (five flashes) - ECU motor circuit (defective ECU)
Code 6 (six flashes) - ECU failsafe relay circuit (defective ECU)
Code 7 (seven flashes) - ECU voltage converter circuit (defective ECU)
Code 8 (eight flashes) - Angle sensor, control motor, ECU or circuit
Code 9 (nine flashes) - Angle sensor, it's circuit or ECU
Code 10 (ten flashes) - Pulse generator or it's circuit
Code 11 (eleven flashes) - Speed Sensor , it's circuit or ECU
Code 12 (twelve flashes) - Gear position switch, it's circuit or ECU

I hope this helps you out.