GUIDE / OBD-II
讀懂故障碼，再決定如何檢修
故障碼記錄控制模組偵測到的異常，不直接判定哪個零件損壞。清碼前先保存全部故障碼、狀態、回報模組和症狀。五位基礎碼後可能有故障類型後綴。採用維修步驟前，確認引擎、年式與銷售市場一致。
更換零件之前
記錄故障碼與凍結資料，檢查電瓶狀態、相關故障碼和可見線束或軟管損傷。依該車診斷程序與測試結果決定維修，避免僅憑故障碼換件。
掃描記錄表 →有原廠依據的故障碼釋義
來源與解讀範圍
先理解含義，再核對引用的原廠頁碼。參考說明與限定車型案例範圍不同，採用維修指令前須確認應用。
- 2000 Powertrain Control/Emissions Diagnosis — Villager OBDII, Description and Operation ↗
Ford Motor Company · PDF 14, 16
Manufacturer example for the 2000 Mercury Villager: module fault detection, code structure and monitor-dependent detection logic. PDF pages are one-based; printed pages 1-14 and 1-16. Historical vehicle-specific documentation, not a current universal code-allocation standard.
- Performing Onboard Diagnostic System Checks as Part of a Vehicle Inspection and Maintenance Program — EPA420-R-01-015, June 2001 ↗
U.S. Environmental Protection Agency
Historical US technical report, inspection-procedure section: retain diagnostic codes and associated freeze-frame information before repair. Supports preserving evidence; not a current global inspection rule. Text edition has no PDF page anchors.