Hino Motors Ltd has recently issued a recall with regards to vehicles equipped with the A05C (HC-SCR) engines. It was done after the truck maker submitted its findings to the Ministry of Land, Infrastructure, Transport, and Tourism in relation to the recall below of some models of the “HINO Ranger” medium-duty trucks equipped with the “A05C (HC-SCR)” medium-duty engine. The recall was issued because of the misconduct that was identified for the certification of these engines along with performance issues.
The recall was done as a provisional measure to restore the performance of the engine exhaust emissions purification catalyst in response to the possibility that the amount of nitrogen oxide in the exhaust system may exceed the regulation value due to aging. While the issue has yet to be resolved, Hino says that customers can still use the vehicles with the A05C engine without any issue until a more permanent solution has been found. Customers who still using the affected vehicle with the aforementioned engine will be contacted by the sales company in turn from the beginning of April.
The truck maker would like to sincerely apologize for any huge inconvenience caused to its customers and to its stakeholders.
Details of the recall
Hino states that the A05C engine had to be recalled due to the regeneration control program of the HC-SCR catalyst for the exhaust emissions purification, the device was considered inappropriate, as there is a possibility that the sulfur component in the exhaust emissions that adheres to the catalyst will not be removed and may accumulate. This means that the performance of the catalyst deteriorates over time, and the emission value of nitrogen oxide in the exhaust emissions may exceed the regulation value.
The repair for the issue
The truck maker states that as a provisional measure, the vehicles affected by this recall will be inspected for the issue. If regeneration of HC-SCR catalyst functions is found to be faulty then, work to regenerate the SCR catalyst will be carried out. If regeneration fails or cannot be successfully completed, the catalyst will be replaced. In addition, HC-SCR catalyst regeneration work (no cost to the customer) will be added to the inspection and maintenance items in the maintenance notes and will be carried out regularly. As soon as permanent measures are decided, we will implement these new measures.
Hino says that approximately 47,000 units are affected by this recall specifically pertaining to trucks that were produced from April 2017 to March 2022.
