Technical Guides
Motorcycle Warning Lights: FI, Oil, ABS Explained
Motorcycle dashboard warning lights: FI / check engine, oil pressure, ABS, temperature, battery. When to stop now vs ride to a shop.
Is a bulb-check at key-on normal?
Many bikes light ABS, engine, and other lamps for a self-test, then go out. If they stay on while running or moving, treat them as real warnings.
The manual icon glossary wins; brands draw symbols slightly differently.
Stop now
Red oil pressure / level, over-temp, and sudden charge warnings: pull over safely. Riding without oil pressure can kill an engine in minutes.
- Oil light: check level, top up if needed; if it stays on, tow
- Temp: fan, coolant, clogged radiator / cap
- Battery / charge: regulator / alternator suspicion; reduce loads and get somewhere safe
FI / check-engine
FI or check-engine usually points at sensors, injection, or emissions. The bike may enter limp mode: reduced power but still movable.
You do not always need to abandon it roadside, but ignoring it for a track day is expensive. A dealer / OBD tool reads codes. Plug context: Motorcycle Spark Plug Guide: Heat Range, Gap, Replacement
ABS light
A solid ABS lamp usually means the system is disabled; normal brakes may work without anti-lock help. Leave more room in wet or panic stops.
ABS primer: What Is ABS? Motorcycle Anti-lock Braking Explained. Fluid: Motorcycle Brake Fluid: DOT 3 vs 4 vs 5.1
What to log
When the light came on, rpm / speed, rain, and last service. Those notes speed diagnosis.
Garage log: RPMVault motorcycle garage. Battery angle: Motorcycle Battery Guide: YTX Types, Life, Replacement
Sources
Intervals and legal rows start from these sources. They do not replace the owner's manual in the toolkit.
- RPMVault editorial standards
- Manufacturer owner's manual for the bike's market
Frequently Asked Questions
FI is blinking. How do I read codes?
Some Yamaha / Honda procedures flash codes with key and buttons; many modern bikes need a shop / OBD tool. Check the manual.
ABS light for 5 seconds at start?
Self-test is normal. Solid while riding is a fault.
Oil light flickers at idle then goes out?
Still take it seriously. Check pressure / level / sensor; do not call it a quirk.
Is disconnecting the battery enough?
No. Clearing history without fixing the cause solves nothing.
Next step
Log the service calendar in your garage, or open model specs in the catalog.