Image available on the official notice.
Motorcycles (Honda GB350, GB350 S) - Repair
Official notice
9 Nov 2023
Last checked
27 Oct 2026
An official CAA Japan notice concerns Motorcycles (Honda GB350, GB350 S) - Repair. Defects in the brake light (rear stop switch) and electrical equipment (bank angle sensor). ■ Defective components (part names): ① Brake light (rear stop switch). ② Electrical equipment (bank angle sensor). ■ Description and cause of the structure, equipment or performance considered noncompliant with standards: ① Some rear stop switches have insufficient durability because of an inappropriate material formulation for the waterproofing grommet. Ozone degradation may therefore cause cracks in the grommet. If rainwater or other moisture enters the switch and reaches its contacts, the brake light may illuminate even when the brake pedal is not pressed. In the worst case, poor electrical continuity at the switch contacts may prevent the brake light from illuminating even when the brake pedal is pressed. ② In the device that stops the engine when the motorcycle falls over (bank angle sensor), inappropriate molding work and mold management for the sensor holder have resulted in inadequate sealing in some holders. If water enters the sensor during riding in rain or similar conditions, the circuit on the internal circuit board may short-circuit, falsely detecting that the motorcycle has fallen over and potentially stopping the engine while riding. Published 2023-11-09.
What to do now
(Recall notification number) 5410 ■ Corrective measures: ① Replace the rear stop switch with a properly manufactured part on all vehicles. ② Replace the bank angle sensor with a properly manufactured part on all vehicles.
Units affected
17,151
Recall number
5410
Official notice
2023-11-09
The hazard
The hazard
Defects in the brake light (rear stop switch) and electrical equipment (bank angle sensor). ■ Defective components (part names): ① Brake light (rear stop switch). ② Electrical equipment (bank angle sensor). ■ Description and cause of the structure, equipment or performance considered noncompliant with standards: ① Some rear stop switches have insufficient durability because of an inappropriate material formulation for the waterproofing grommet. Ozone degradation may therefore cause cracks in the grommet. If rainwater or other moisture enters the switch and reaches its contacts, the brake light may illuminate even when the brake pedal is not pressed. In the worst case, poor electrical continuity at the switch contacts may prevent the brake light from illuminating even when the brake pedal is pressed. ② In the device that stops the engine when the motorcycle falls over (bank angle sensor), inappropriate molding work and mold management for the sensor holder have resulted in inadequate sealing in some holders. If water enters the sensor during riding in rain or similar conditions, the circuit on the internal circuit board may short-circuit, falsely detecting that the motorcycle has fallen over and potentially stopping the engine while riding.
How to check if you're affected
How to check if you're affected
Compare the product name and identifiers below with the item you own. Check the official notice for the affected products and next steps.
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Where it was sold
Where it was sold
Retailer information is not currently available in RecallScope. Check the official notice for distribution details.
Location 1
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Company & contacts
Company & contacts
Brand: Honda. Contact: 本田技研工業株式会社. Phone 0120-086819.
Source & status
Source & status
Recall details
Recall details
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Event id
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Documents, notices & source
See the official notice and source documents for full details.
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