Engine-CodesMercury – P1168 Mercury

P1168 Mercury Code - Fuel Rail Pressure Sensor Condition Low Pressure

Quick Answer

The P1168 code for Mercury vehicles indicates a problem with the fuel rail pressure sensor, specifically that it is detecting low pressure. Common causes include Faulty fuel rail pressure sensor, Clogged fuel filter, Weak fuel pump. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
P1168 Mercury indicates Fuel Rail Pressure Sensor Condition Low Pressure.
Common causes
Common causes include Faulty fuel rail pressure sensor, Clogged fuel filter, Weak fuel pump.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Table of contents Created and updated by William Orellana on Sep 10, 2024
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Code P1168 Mercury Description

The P1168 code for Mercury vehicles indicates a problem with the fuel rail pressure sensor, specifically that it is detecting low pressure. The fuel rail pressure sensor is a crucial component of the vehicle's fuel system, responsible for monitoring the pressure in the fuel rail and sending this information to the engine control module (ECM). This information is used by the ECM to regulate the fuel delivery to the engine, ensuring optimal performance and efficiency.

OBDII Code P1168 Mercury - Fuel Rail Pressure Sensor Condition Low Pressure
P1168 Mercury Code - Fuel Rail Pressure Sensor Condition Low Pressure

Common Causes of P1168 Mercury

  1. Faulty fuel rail pressure sensor
  2. Clogged fuel filter
  3. Weak fuel pump
  4. Fuel leak in the system
  5. Wiring or electrical issues related to the fuel rail pressure sensor

Symptoms of P1168 Mercury

  1. Engine hesitation or stumbling during acceleration
  2. Poor fuel economy
  3. Rough idling or engine misfires
  4. Engine stalling
  5. Check engine light illuminated on the dashboard

How to Fix P1168 Mercury

  1. Use a diagnostic scan tool to confirm the P1168 code and identify the specific cause of the low fuel pressure.
  2. Inspect the fuel rail pressure sensor for any signs of damage or malfunction and replace if necessary.
  3. Check the fuel filter for clogs or debris and replace if needed.
  4. Test the fuel pump to ensure it is delivering the correct pressure and flow, replacing if it is weak.
  5. Inspect the fuel system for any leaks and repair as needed.

Cost to Fix P1168 Mercury

The typical repair costs for addressing a P1168 code on a Mercury vehicle can vary depending on the specific cause of the issue. On average, the cost of parts such as a fuel rail pressure sensor, fuel filter, or fuel pump can range from $100 to $500. Labor costs at auto repair shops typically range from $80 to $150 per hour, and the total repair cost can amount to $200 to $1000 or more, depending on the extent of the repairs needed. It's recommended to consult with a professional mechanic to get an accurate estimate based on your vehicle's make and model, as well as the local labor rates in your area.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

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