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John Mc
John Mc, Mercury Technician
Category: Mercury
Satisfied Customers: 6240
Experience:  19 years Ford Lincoln Mercury experience
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Mercury Monterey Premier What does code P0193 Fuel Rail Pressure

Resolved Question:

What does code P0193 Fuel Rail Pressure Sensor Circuit High Input mean and how do I fix it?
Also, code P0401 EGR flow insufficient and how do I fix that? Thank you.
Submitted: 5 years ago.
Category: Mercury
Expert:  John Mc replied 5 years ago.

John Mc :

Hi, I am John Mc, a Mercury dealer tech. I hope I can help you quickly and accurately. One moment while I work on your problem.

John Mc :

P0193 is an easily fixed code. It is caused by a bad fuel rail pressure sensor. This is located on the top of the engine between the valve cover and intake manifold and is very easy to replace. I believe the sensors cost around $100 and will take about 5 minutes to replace. The second problem P0401 is caused by a bad egr valve. This is also very easy to replace but I believe these cost around $200 to $250. You can replace both of these parts by yourself and save some money on the labor. Just buy the parts (both of these are dealer only parts) and look for the same part on the motor. They will be right in front of you and then you will realize just how easy they are to replace.

John Mc :

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