In September 2021, Hino filed a statutory recall with Japan's Ministry of Land, Infrastructure, Transport and Tourism (MLIT) concerning the Other (Engine), covering the Profia. The filing affects 34,588 vehicles manufactured between June 2017 and September 2021.
Overview
| MLIT filing number | 1150160 |
|---|---|
| Type | Statutory Recall (government-mandated recall) |
| Date filed | September 15, 2021 |
| Manufacturer(s) | Hino |
| Component | Other (Engine) |
| Production period | June 2017 — September 2021 |
| Vehicles affected | 34,588 units |
Filing in context
The Other (Engine) is the most frequently cited component category in this archive, appearing in 46 of its 4,890 filings. This filing is one of 40 Hino notifications from 2021 in this archive. For scale, 940 of the 4,890 filings in this archive report a larger number of affected vehicles; the vehicles involved here were manufactured over a span of about 4 years and 3 months.
Defect
In the engine, two separate conditions may cause abnormal combustion. First, an improperly calibrated engine control program can cause abnormal combustion when the speed limiter activates during sustained high-load driving. Second, insufficient oil drainage performance inside the head cover — which is responsible for returning oil to the oil pan — allows oil pooled in the head cover to enter the combustion chamber as a mist carried by blowby gas during high-load hill climbing, causing abnormal combustion. In either case, the connecting rod may suffer fatigue fracture during driving, causing the engine to stall. If the fracture causes oil to be ejected, surrounding components may catch fire and the vehicle may become inoperable.
Corrective action
1. On all vehicles, reprogram the engine control program to the corrected specification. In addition, review vehicle operating data; on vehicles with extended high-load operating hours, replace the connecting rod assembly with new parts. Due to parts availability, replacement will be performed in order of priority, beginning with vehicles with the longest high-load operating hours. 2. On a portion of vehicles, install a corrected part (ventilator) on the head cover.
Affected models & chassis ranges
This filing lists 28 type code(s). A vehicle is affected if its chassis number falls within one of the ranges below.
| Type code (型式) | Model | Chassis ranges |
|---|---|---|
| 2PG-FR1AHA | PROFIA | FR1AH-100015 — FR1AH-108763 |
| 2PG-FR1AHG | PROFIA | FR1AH-100015 — FR1AH-108763 |
| 2PG-FR1AHJ | PROFIA | FR1AH-100015 — FR1AH-108763 |
| 2PG-FR1AJA | PROFIA | FR1AJ-100036 — FR1AJ-101473 |
| 2PG-FS1AGA | PROFIA | FS1AG-100015 — FS1AG-105870 |
| 2PG-FS1AHA | PROFIA | FS1AH-100015 — FS1AH-101352 |
| 2PG-FS1AHG | PROFIA | FS1AH-100015 — FS1AH-101352 |
| 2PG-FS1AHJ | PROFIA | FS1AH-100015 — FS1AH-101352 |
| 2PG-FS1AJA | PROFIA | FS1AJ-100016 — FS1AJ-101659 |
| 2PG-FW1AHG | PROFIA | FW1AH-100015 — FW1AH-120909 |
| 2PG-FW1AHJ | PROFIA | FW1AH-100015 — FW1AH-120909 |
| 2PG-FW1AJG | PROFIA | FW1AJ-100015 — FW1AJ-100357 |
| 2PG-FW1AJJ | PROFIA | FW1AJ-100015 — FW1AJ-100357 |
| 2RG-FR1AHA | PROFIA | FR1AH-100015 — FR1AH-108763 |
| 2RG-FR1AHG | PROFIA | FR1AH-100015 — FR1AH-108763 |
| 2RG-FR1AHJ | PROFIA | FR1AH-100015 — FR1AH-108763 |
| 2RG-FR1AJG | PROFIA | FR1AJ-100036 — FR1AJ-101473 |
| 2RG-FS1AHA | PROFIA | FS1AH-100015 — FS1AH-101352 |
| 2RG-FS1AHG | PROFIA | FS1AH-100015 — FS1AH-101352 |
| 2RG-FS1AHJ | PROFIA | FS1AH-100015 — FS1AH-101352 |
| 2RG-FW1AHG | PROFIA | FW1AH-100015 — FW1AH-120909 |
| 2RG-FW1AHJ | PROFIA | FW1AH-100015 — FW1AH-120909 |
| 2RG-FW1AJG | PROFIA | FW1AJ-100015 — FW1AJ-100357 |
| 2RG-FW1AJJ | PROFIA | FW1AJ-100015 — FW1AJ-100357 |
| 2SG-FR1AHH | PROFIA | FR1AH-100015 — FR1AH-108763 |
| 2SG-FR1AHS | PROFIA | FR1AH-100015 — FR1AH-108763 |
| 2SG-FW1AHH | PROFIA | FW1AH-100015 — FW1AH-120909 |
| 2SG-FW1AHS | PROFIA | FW1AH-100015 — FW1AH-120909 |
Original Japanese (MLIT source text)
Show the original Japanese filing text
状況
原動機において、 １．エンジン制御プログラムが不適切なため、高負荷連続走行中に速度抑制装置が作動するような条件下で異常燃焼が発生することがある。 ２．ヘッドカバー内油切性能（ヘッドカバー内のオイルをオイルパンに戻す）が不十分なため、坂路を高負荷走行するとヘッドカバー内に滞留したオイルがブローバイガスとともにミスト状の形で燃焼室に廻り込んで異常燃焼が発生することがある。 そのため、走行中にコンロッドが疲労破損してエンジンが停止し、コンロッドの破損によりオイルが飛散した場合は周辺部品が焼損し、走行不能となるおそれがある。
改善措置
１．全車両、エンジン制御プログラムを対策仕様に修正する。また、車両稼働データを確認し、高負荷での稼働時間が長い車両は、コンロッド一式を新品に交換する。なお、部品の準備に時間を要するため、高負荷での稼働時間が長い車両から順次交換作業を行うこととする。 ２．一部の車両は、ヘッドカバー部に対策品（ベンチレータ）を取り付ける。
Source & verification
This entry reproduces public data from Japan's MLIT recall registry. English text is jdmvin.com's own translation; always verify against the official source:
https://renrakuda.mlit.go.jp/renrakuda/ris-detail-car.html?class=recalldatacar&id=3005038
Related recalls
Same manufacturer, same component
Other Hino filings involving the Other (Engine), closest to this one by filing date.
Other (Engine) — affects 18,386 vehicles.
Open recall detail →Other (Engine) — affects 537 vehicles.
Open recall detail →Other (Engine) — affects 16,110 vehicles.
Open recall detail →Other (Engine) — affects 37 vehicles.
Open recall detail →Other recalls affecting the same models
Filings whose affected type codes overlap with this one, newest first.
Computer — affects 10,438 vehicles.
Open recall detail →Electrical Equipment (Other) — affects 19 vehicles.
Open recall detail →Other — affects 526 vehicles.
Open recall detail →Fuel Injection System — affects 1,132 vehicles.
Open recall detail →Exhaust pipe — affects 4,156 vehicles.
Open recall detail →