In September 2004, Subaru filed a statutory recall with Japan's Ministry of Land, Infrastructure, Transport and Tourism (MLIT) concerning the Lubrication System, covering the Impreza, Forester. The filing affects 23,137 vehicles manufactured between June 28, 2000 and February 21, 2003.
Overview
| MLIT filing number | 1112200 |
|---|---|
| Type | Statutory Recall (government-mandated recall) |
| Date filed | September 15, 2004 |
| Manufacturer(s) | Subaru |
| Component | Lubrication System |
| Production period | June 28, 2000 — February 21, 2003 |
| Vehicles affected | 23,137 units |
Filing in context
The Lubrication System is the most frequently cited component category in this archive, appearing in 11 of its 4,890 filings. This filing is one of 7 Subaru notifications from 2004 in this archive. For scale, 1,151 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 2 years and 7 months.
Defect
On turbocharged manual transmission vehicles, the oil control valve (OCV) cover mounting bolt — which controls intake valve timing hydraulically — has insufficient axial clamping force. Sustained high-load, high-rpm operation increases negative pressure inside the engine, which deforms the OCV gasket and further reduces bolt clamping force. As a result, the bolt may loosen and engine oil may leak. In the worst case, a vehicle fire may result.
Corrective action
On all vehicles, retighten the affected bolt to the specified torque.
Affected models & chassis ranges
This filing lists 5 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 |
|---|---|---|
| GH-GDB | IMPREZA | GDB-002015 — GDB-019152 |
| GH-GGB | IMPREZA | GGB-002008 — GGB-003351 |
| TA-GDA | IMPREZA | GDA-002031 — GDA-012744 |
| TA-GGA | IMPREZA | GGA-002022 — GGA-009518 |
| TA-SG5 | FORESTER | SG5-002008 — SG5-035644 |
Original Japanese (MLIT source text)
Show the original Japanese filing text
状況
ターボチャージャー付手動変速機車両において、エンジン吸気バルブ開閉タイミングを 油圧で制御するためのオイルコントロールバルブ（ＯＣＶ）のカバー締付ボルトの軸力が低 いため、高負荷高回転を継続して使用した場合、エンジン内部の負圧が増大し、ＯＣＶのガ スケットの変形により当該ボルトの軸力が更に低下することがある。そのため、当該ボル トが緩みエンジンオイルが漏れ、最悪の場合、火災に至るおそれがある。
改善措置
全車両、当該ボルトを増し締めする。
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=3000882
Related recalls
Same manufacturer, same component
Other Subaru filings involving the Lubrication System, closest to this one by filing date.
Other recalls affecting the same models
Filings whose affected type codes overlap with this one, newest first.
Airbag — affects 12,611 vehicles.
Open recall detail →Airbag — affects 91,151 vehicles.
Open recall detail →Engine (General) — affects 1,362 vehicles.
Open recall detail →Lubrication system — affects 3,907 vehicles.
Open recall detail →Body — affects 39,365 vehicles.
Open recall detail →