Image available on the official notice.
Motorcycles (Yamaha SEROW XT250 and others) - Repair
Official notice
12 Mar 2019
Last checked
27 Oct 2026
An official CAA Japan notice concerns Motorcycles (Yamaha SEROW XT250 and others) - Repair. Defect in the onboard diagnostic system (engine control unit). ■ Defective part (component name): Onboard diagnostic system (engine control unit). ■ Description and cause of the structure, equipment or performance considered noncompliant with standards: Due to inappropriate programming of the engine control unit (ECU) in the onboard diagnostic system, the ECU performs communication processing that does not comply with Article 31 of the Safety Regulations after an external diagnostic device (scan tool) is connected. As a result, some scan tools may be unable to communicate with the ECU, preventing fault diagnosis. Published 2019-03-12.
What to do now
(Recall)4456 ■ Corrective measures: Reprogram the engine control unit with a corrected program on all vehicles.
Recall number
4456
Official notice
2019-03-12
The hazard
The hazard
Defect in the onboard diagnostic system (engine control unit). ■ Defective part (component name): Onboard diagnostic system (engine control unit). ■ Description and cause of the structure, equipment or performance considered noncompliant with standards: Due to inappropriate programming of the engine control unit (ECU) in the onboard diagnostic system, the ECU performs communication processing that does not comply with Article 31 of the Safety Regulations after an external diagnostic device (scan tool) is connected. As a result, some scan tools may be unable to communicate with the ECU, preventing fault diagnosis.
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.
Recall Numbers
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Turn on automatic VIN checksAffected products
Affected products
Product 1
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
Source tier
Documents, notices & source
See the official notice and source documents for full details.
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