這個碼是什麼意思？
P0442 表示小洩漏，P0455 表示大洩漏，P0456 表示極小洩漏。檢查適用車型的油箱蓋密封、軟管與閥門，依原廠程序檢漏。油箱蓋鬆動只是可能原因之一。不要在燃油蒸氣附近使用壓縮空氣或明火測試。
來源與解讀範圍 [1]
故障碼描述偵測到的異常，不直接指定必須更換的零件。
原廠技術資料
7以下為英文原文
BUICK, CADILLAC, CHEVROLET, GMC
原文故障碼 P0442
This service bulletin provides diagnostic tips/steps on testing for possible EVAP leaks in the system to correct a customer concern of an MIL Illuminated with DTCs P0442 and/or P0455 Set.
CHEVROLET
原文故障碼 P0442
Emissions - General Motors has decided to conduct a voluntary emissions recall involving certain 2016-2019 model year Chevrolet Volt vehicles. The evaporative emissions pipe that connects to the inlet of the purge valve…
CHEVROLET
原文故障碼 P0442
17197 01 - Service Update. Some vehicles may have contact between an evaporative emission pipe and air conditioning (A/C) hose. Over time, such contact may wear a hole into the pipe causing a malfunction indicator lamp…
CHEVROLET
原文故障碼 P0442
17197 - Service Update. Some vehicles may have contact between an evaporative emission pipe and air conditioning (A/C) hose. Over time, such contact may wear a hole into the pipe causing a malfunction indicator lamp…
CHEVROLET
原文故障碼 P0442
This Preliminary Information communication provides information to the technician about vehicles that have a Malfunction Indicator Lamp on. Technician will find Diagnostic Trouble Code P0442 set. Technician will need to…
BUICK, CADILLAC, CHEVROLET, GMC, HUMMER, ISUZU, OLDSMOBILE, PONTIAC, SAAB, SATURN
原文故障碼 P0442
This Preliminary Information communication provides information to the technician about vehicles that have a Service Engine Soon Malfunction Indicator Lamp. Technician may find Diagnostic Trouble Code P0442. Technician…
核對適用車輛
9車型關聯可作查閱線索；引擎、生產範圍與軟體條件請核對原廠資料。
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。
來源與解讀範圍
以下解釋由本站依所列原廠資料整理。頁碼從 PDF 檔案第一頁起算。原文為英文，譯文供參考；引用某版本不代表它是原廠目前最新指令。
- 2024–2025 MY OBD System Operation Summary for Gasoline Engines ↗
Ford Motor Company · PDF 頁碼 11, 12 ·
來源核對日期 · 2026-10-27
還能繼續駕駛嗎？
不能只憑故障碼判斷能否繼續行駛。故障燈閃爍、嚴重抖動、過熱、機油壓力警示或煞車轉向異常需立即注意。影響操控或引擎安全時，應在安全地點停車並求助。以車主手冊為準。