In June 2019, Mazda filed a statutory recall with Japan's Ministry of Land, Infrastructure, Transport and Tourism (MLIT) concerning the Computer (Engine), covering the Atenza, CX-5. The filing affects 9,000 vehicles manufactured between February 2018 and May 23, 2019.
Overview
| MLIT filing number | 1145150 |
|---|---|
| Type | Statutory Recall (government-mandated recall) |
| Date filed | June 27, 2019 |
| Manufacturer(s) | Mazda |
| Component | Computer (Engine) |
| Production period | February 2018 — May 23, 2019 |
| Vehicles affected | 9,000 units |
Filing in context
The Computer (Engine) is the most frequently cited component category in this archive, appearing in 49 of its 4,890 filings. This filing is one of 19 Mazda notifications from 2019 in this archive. For scale, 1,670 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 1 year and 3 months.
Defect
In the engine control computer, a flawed cylinder deactivation control program may cause the valve clearance adjustment mechanism to malfunction when returning from cylinder deactivation mode. This can cause the rocker arm to disengage and contact adjacent components, resulting in engine misfire and loss of power output. In the worst case, the engine may stall.
Corrective action
On all vehicles, reprogram the cylinder deactivation control program in the engine control computer with the corrected/updated software.
Affected models & chassis ranges
This filing lists 3 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 |
|---|---|---|
| 6BA-GJ5FP | Atenza | GJ5FP-400004 — GJ5FP-401175 |
| 6BA-GJ5FW | Atenza | GJ5FW-400003 — GJ5FW-400753 |
| 6BA-KF5P | ＣＸ－５ | KF5P-200003 — KF5P-304386 |
Original Japanese (MLIT source text)
Show the original Japanese filing text
状況
エンジン制御コンピュータにおいて、気筒休止制御プログラムが不適切なため、気筒休止から復帰する際、バルブクリアランス調整機構が誤作動することがある。そのため、ロッカアームが脱落して周辺部品と干渉し、エンジン失火による出力不足が発生して、最悪の場合、エンジンが停止するおそれがある。
改善措置
全車両、エンジン制御コンピュータの気筒休止制御プログラムを対策プログラムに修正する。
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=3004538
Related recalls
Same manufacturer, same component
Other Mazda filings involving the Computer (Engine), closest to this one by filing date.
Computer (Engine) — affects 235,293 vehicles.
Open recall detail →Computer (Engine) — affects 3,836 vehicles.
Open recall detail →Computer (Engine) — affects 3,836 vehicles.
Open recall detail →Computer (Engine) — affects 23,208 vehicles.
Open recall detail →Computer (Engine) — affects 12 vehicles.
Open recall detail →Other recalls affecting the same models
Filings whose affected type codes overlap with this one, newest first.
Other — affects 9,972 vehicles.
Open recall detail →Fuel pump — affects 146,777 vehicles.
Open recall detail →Fuel pump — affects 42,505 vehicles.
Open recall detail →Parking Brake (General) — affects 49,166 vehicles.
Open recall detail →Headlights — affects 3,773 vehicles.
Open recall detail →