Faulty lights or indicators on a Honda CB125R 2026
Is your Honda CB125R 2026 showing "Faulty lights or indicators"? Here's the most likely cause, the checks to run, and the parts that fit your bike.
Technical bulletin
Honda CB125R 2026 — owner breakdown
The Honda CB125R 2026 is a Japanese-built small-displacement 125cc four-stroke machine, catalogued from 2018 to 2026. Checks below are ordered for this bike.
- Engine
- 125 cm³ · four-stroke
- Category
- small-displacement
- Production years
- 2018–2026
- Newest model year
- 2026
Catalog data and community feedback — indicative markers, not a workshop manual.
Most likely cause
BasicBlown bulb
The most frequent and simplest cause: a broken filament or blackened glass. A single light affected = almost always the bulb. Replace with a bulb of the same type and rating (base/wattage engraved or in the manual). Don't touch halogen glass with bare hands. 🟢 A few minutes to replace. This tool helps you understand what's going on -- it doesn't replace a certified mechanic.
How to make the repair yourself
🟢 Within reach of any rider: no advanced mechanical skill or specialised tooling needed.
- Identify the affected light and get to the bulb (rear headlight cover, removing the light unit, or a hatch depending on the model).
- Remove the bulb and check: broken filament or blackened glass = dead.
- Fit a new bulb of identical type, base and wattage. For a halogen, handle the glass with a clean cloth (grease burns it out).
- Test before refitting everything; also check the headlight beam alignment.
⚠️ This tool helps you understand what's going on with your motorcycle; it doesn't replace the inspection or judgment of a certified mechanic. If in persistent doubt, if a safety-critical part is involved (braking, steering, bearings, transmission), or if the problem keeps recurring, have the diagnosis confirmed at a workshop before doing any work.