Honda RS150R 2019 Owner's Manual page 21

Fuel gauge
Remaining fuel when only 1st (E) starts flashing:
approximately 1.48 litres (0.391 US gal,
0.326 Imp gal)
If the fuel gauge flashes or turns off:
Speedometer
(P80)
Odometer [TOTAL]
Total distance ridden.
Gear position indicator
Shows 1st to 6th gear position.
17