If the PCM loses power for any reason (Including a disconnected or depleted battery), or if diagnostic trouble codes are cleared using a diagnostic scan tool, readiness monitors will indicate an incomplete, or not ready, status. If a fault is detected, the power train control module (PCM – The computer) illuminates the malfunction indicator light (MIL – Check Engine – Service Vehicle Soon). These checks are performed in the background during normal driving and are designed not to interfere with vehicle performance or safety. On 1996 and newer model year vehicles, the on board diagnostic system (OBDII) performs up to eleven diagnostic checks of vehicle emission control systems. This can often be necessary in order to determine if your car is ready for its California smog inspection.
If you are unsure about what your diagnostic trouble codes mean have your F-150 diagnosed by a professional automotive technician.It is possible to check OBD II monitor readiness on many late model vehicles without connecting a scan tool. Flashing Check Engine Light: If your check engine light is flashing, stop driving your F-150 and have it towed to your nearest mechanic - you probably have a very serious problem with your car and you risk ruining your engine by driving it. Steady Check Engine Light: If your check engine light is on every time you operate your F-150, you need to have it checked as soon as possible, especially if you notice performance problems or unusual noises. 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.
Intermittent Check Engine Light: If the check engine light on your 2007 F-150 is intermittent, try to take note of the conditions when this happens. The video above shows how to locate the on board diagnostics (OBD) plug on your 2007 F-150, how to read the trouble codes and how to reset or clear the check engine light using a scanner on your F-150.
In some cases you need to pull over immediately to prevent damage while in others you merely need to tighten you gas cap next time you stop in order to reset the service engine soon light. A check engine light can indicate a broad spectrum of problems with your 2007 Ford F-150.
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