本段视频演示车型：1995 福特 F-250 XL 7.5 升 V8 标准驾驶室 皮卡 (2 门)
操作说明
发动机故障灯可能表明您的 1991 福特 F-250 存在多种问题。 如果发动机故障灯闪烁，立即关闭发动机，以防止发动机受损。 如果发动机故障灯持续亮起，可能只是说明你下次停车时只需拧紧汽油罐盖，就能重置“发动机快检修”灯。 上述视频展示了如何在您的 1991 F-250 上找到车载诊断OBD接口的位置，如何读取故障码，以及如何使用连接在 F-250 上的扫描仪来清除或关闭发动机故障灯。
发动机故障灯亮着时可以开车吗？ 发动机故障灯间歇亮起：如果 1991 年款 F-250 的发动机故障灯不是一直亮着，请记录出现这种情况时的工况。 例如，是在加速、高速行驶时出现，还是在低速时出现？ 这将有助于你的维修技师评估问题。 持续点亮的发动机故障灯：如果每次操作您的F-250时发动机故障灯都亮起，应尽快进行检查，特别是您注意到性能问题或异常噪音时。 发动机故障灯闪烁：如果您的发动机故障灯在闪烁，请立即停止驾驶您的 F-250，并将其拖到最近的维修店 – 发动机故障灯闪烁意味着您的车辆很可能存在非常严重的故障，继续驾驶可能会导致发动机损坏。 如果你在找到 F-250 的OBD接口位置并读取故障码后，仍不确定这些故障码的含义，请将 F-250 委托给专业汽车维修技师进行诊断。
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A check engine light can indicate a broad spectrum of problems with your 1991 Ford F-250. If you have a flashing check engine light, turn off the engine immediately to prevent potential motor damage. Whereas a steady check engine light may mean you merely need to tighten you gas cap next time you stop in order to reset the service engine soon light. The video above shows how to locate the on board diagnostics OBD plug location on your 1991 F-250, how to read the trouble codes and how to reset or clear the check engine light using a scanner on your F-250.
Is it OK to drive with a check engine light on? Intermittent Check Engine Light: If the check engine light on your 1991 F-250 is not steady, try to take note of the conditions when this happens. For example, does it happen when you accelerating, driving on the highway or does it appear at low speeds? This will help your mechanic evaluate the issue. Steady Check Engine Light: If your check engine light is on every time you operate your F-250, you need to have it checked as soon as possible, especially if you notice performance problems or unusual noises. Flashing Check Engine Light: If your check engine light is flashing, stop driving your F-250 and have it towed to your nearest mechanic – a blinking check engine light means you probably have a very serious problem with your car and you risk ruining your engine by driving it. If you are unsure about what your diagnostic trouble codes mean after finding the F-250 OBD port location and scanning the codes; have your F-250 diagnosed by a professional automotive technician.