這個碼是什麼意思？
以下表述對應所列原廠與通報。使用前請核對完整故障碼、回報模組、年式與引擎。
故障碼描述偵測到的異常，不直接指定必須更換的零件。
原廠原文中的含義
原文含義可能隨車型與後綴變化。此處依來源顯示，不代表通用診斷結論。
P0191FUEL RAIL PRESSURE SENSOR CIRCUIT PERFORMANCE原廠技術資料
4以下為英文原文
FORD, MERCURY
原文故障碼 P0191
DRIVEABILITY-MALFUNCTION INDICATOR LAMP (MIL) WITH P0316 WHEN USING WINTER BLEND REFORMULATED FUELS AT TEMPERATURES ABOVE 50 DEGREES F (10 DEGREES C) DURING WINTER MONTHS-ROUGH OR ROLLING IDLE AFTER HOT SOAK RESTART…
FORD, MERCURY
原文故障碼 P0191
SOME VEHICLES EQUIPPED WITH A 3.0L 4V ENGINE MAY EXHIBIT A MALFUNCTION INDICATOR LAMP ILLUMINATION WITH A DIAGNOSTIC TROUBLE CODE P0191 (FUEL RAIL PRESSURE SENSOR CIRCUIT PERFORMANCE) IN MEMORY. *TT
FORD, MERCURY
原文故障碼 P0191
SOME VEHICLES MAY EXHIBIT A ROUGH ENGINE IDLE, ENGINE IDLE ROUGHNESS OR IDLE RPM DIP WITH THE AIR CONDITIONER ON, A DIAGNOSTIC TROUBLE CODE P0191 OR 1-2 UPSHIFT. *TT
FORD, MERCURY
原文故障碼 P0191
SOME VEHICLES MAY EXHIBIT VARIOUS DIAGNOSTIC TROUBLE CODES (DTCS) P1233, P1235, P1237, P0191) AND / OR DRIVEABILITY / TRANSMISSION SHIFTING CONCERNS DUE TO WIRING THAT HAS BECOME CHAFED ON THE TOP OF THE TRANSMISSION…
核對適用車輛
2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。
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。