Image available on the official notice.
Motorcycles (Yamaha MT-09 and 2 other models) - Repair
Official notice
1 Mar 2022
Last checked
27 Oct 2026
An official CAA Japan notice concerns Motorcycles (Yamaha MT-09 and 2 other models) - Repair. Engine (engine control unit) defects. ■ Defective component (part name): Engine (engine control unit). ■ Details and causes of the structure, equipment or performance considered noncompliant with standards: ① Due to inappropriate engine control unit programming, when the clutch lever is pulled with the throttle closed during deceleration, a small clutch lever grip span may cause the air-fuel mixture drawn into the combustion chamber to become lean. In the worst case, the engine may stall. ② Due to inappropriate engine control unit programming, opening the throttle slightly from idle may cause the air-fuel mixture drawn into the combustion chamber to become lean. In the worst case, the engine may stall. ③ Due to inappropriate engine control unit programming, current to the motor that rotates the throttle body valve may be cut off and the engine warning light may illuminate. In the worst case, the throttle body valve cannot be operated, preventing the vehicle from being driven. ④ Due to inappropriate engine control unit programming, the engine warning light does not illuminate when a component or system fails. This does not comply with Safety Standards Article 31, Annex 115 (technical standards for on-board diagnostic systems). Published 2022-03-01.
What to do now
(Recall)5107. ■ Remedial measures: Reprogram the engine control unit with the corrected program on all vehicles.
Units affected
1,813
Recall number
5107
Official notice
2022-03-01
The hazard
The hazard
Engine (engine control unit) defects. ■ Defective component (part name): Engine (engine control unit). ■ Details and causes of the structure, equipment or performance considered noncompliant with standards: ① Due to inappropriate engine control unit programming, when the clutch lever is pulled with the throttle closed during deceleration, a small clutch lever grip span may cause the air-fuel mixture drawn into the combustion chamber to become lean. In the worst case, the engine may stall. ② Due to inappropriate engine control unit programming, opening the throttle slightly from idle may cause the air-fuel mixture drawn into the combustion chamber to become lean. In the worst case, the engine may stall. ③ Due to inappropriate engine control unit programming, current to the motor that rotates the throttle body valve may be cut off and the engine warning light may illuminate. In the worst case, the throttle body valve cannot be operated, preventing the vehicle from being driven. ④ Due to inappropriate engine control unit programming, the engine warning light does not illuminate when a component or system fails. This does not comply with Safety Standards Article 31, Annex 115 (technical standards for on-board diagnostic systems).
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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Hazard
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
Affected area 1
Company & contacts
Company & contacts
Brand: Yamaha. Contact: ヤマハ発動機株式会社. Phone 0120-090-819.
Source & status
Source & status
Recall details
Recall details
Recall number
Event id
Units affected
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Documents, notices & source
See the official notice and source documents for full details.
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