2003 Ford Expedition Check Engine Soon Light

If anything goes wrong with the engine the computer will illuminate the check engine light cel. If the light stays on the fault is ongoing. If it goes off the problem is intermittent but the computer will store the code for later diagnostics.

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Locate the diagnostics port under the dashboard of your ford.

2003 ford expedition check engine soon light.

Your timing chain could have jumped. How to reset a ford expedition s check engine soon light by richard rowe. Connect your obd ii scanner into the diagnostics port. I have 2003 ford expedition the service engine soon light is on.

The first step in troubleshooting the check engine light is to read the fault codes with an obd ii scanner. 308 miles annemarie l july 13 2020 7 10 am el monte ca 91732. 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. 5 00 hrs 1 40 hrs 2000 ford expedition 5 4l v8 xlt.

Flashing check engine light ford expedition while a majority of the time the flashing check engine light is going to be caused by a misfire related to your expedition s ignition system or fuel system as stated above there are other issues that can cause it. Ford expedition check engine light diagnosis. When i check the codes it says p0171 bank 1 lean and p0174 bank 2 lean it had 2 more codes saying 02sensors stuck lean i replaced all the 02 sensors cleared the codes they all came back i just now checked the codes to get the s and thats when the 02 sensor codes had cleared what else should i check or change. Turn on the ignition by pressing the start button without pressing the brake pedal.

A check engine light can indicate a broad spectrum of problems with your 2004 ford expedition. 2003 ford expedition.