# OBDLens 故障コード一覧

Source: https://obdlens.com/ja/
Last built: f308d1b1847024568b3a

機械下書き・ネイティブ校正前

- [P0420 触媒システム効率低下（バンク1）](https://obdlens.com/ja/codes/p0420/)
- [P0171 システム・リーン（バンク1）](https://obdlens.com/ja/codes/p0171/)
- [P0300 ランダム／複数気筒の失火検出](https://obdlens.com/ja/codes/p0300/)

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Reference-family membership is not proof that a code applies to every listed ECU or vehicle. Runtime-ready definitions are not physical-vehicle validation. Unavailable readings must not be treated as zero. App and hardware sale availability must be checked separately.