Engine-CodesMercury – P0192 Mercury

P0192 Mercury Code - Fuel Rail Pressure Sensor Circuit Low Input

Quick Answer

The P0192 diagnostic trouble code (DTC) for Mercury vehicles refers to a Fuel Rail Pressure Sensor Circuit Low Input. Common causes include Faulty fuel rail pressure sensor, Wiring issues or poor connections in the fuel rail pressure sensor circuit, Low fuel pressure in the fuel rail. 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
P0192 Mercury indicates Fuel Rail Pressure Sensor Circuit Low Input.
Common causes
Common causes include Faulty fuel rail pressure sensor, Wiring issues or poor connections in the fuel rail pressure sensor circuit, Low fuel pressure in the fuel rail.
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 11, 2024
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Code P0192 Mercury Description

The P0192 diagnostic trouble code (DTC) for Mercury vehicles refers to a Fuel Rail Pressure Sensor Circuit Low Input. This code indicates that the fuel rail pressure sensor is detecting a lower than expected voltage signal from the fuel rail pressure sensor circuit. The fuel rail pressure sensor is a crucial component of the vehicle's fuel system, as it measures the pressure of the fuel in the fuel rail and sends this information to the engine control module (ECM). The ECM uses this data to adjust fuel delivery to ensure optimal engine performance and efficiency.

OBDII Code P0192 Mercury - Fuel Rail Pressure Sensor Circuit Low Input
P0192 Mercury Code - Fuel Rail Pressure Sensor Circuit Low Input

Common Causes of P0192 Mercury

  1. Faulty fuel rail pressure sensor
  2. Wiring issues or poor connections in the fuel rail pressure sensor circuit
  3. Low fuel pressure in the fuel rail
  4. Issues with the fuel pump
  5. Problems with the ECM or engine control module

Symptoms of P0192 Mercury

  1. Check engine light illuminated
  2. Rough idling or stalling
  3. Hesitation during acceleration
  4. Decreased fuel efficiency
  5. Engine misfires

How to Fix P0192 Mercury

  1. Begin by connecting an OBD-II scanner to the vehicle's diagnostic port to retrieve the specific DTC and confirm the P0192 code.
  2. Inspect the fuel rail pressure sensor and its wiring for any visible damage or corrosion. Replace the sensor if necessary.
  3. Check the fuel pressure in the fuel rail to ensure it meets the manufacturer's specifications. Address any issues with the fuel pump or fuel delivery system.
  4. Clear the DTC from the ECM's memory using the OBD-II scanner and test drive the vehicle to verify that the issue has been resolved.
  5. If the problem persists, consult a professional mechanic for further diagnostics and repairs, as there may be underlying issues with the ECM or other components.

Cost to Fix P0192 Mercury

The repair costs for addressing a P0192 Fuel Rail Pressure Sensor Circuit Low Input code can vary depending on the specific cause of the issue and the labor rates at the auto repair shop. Generally, replacing a faulty fuel rail pressure sensor can cost between $150 and $300, including parts and labor. However, if additional components such as the fuel pump need to be replaced, the total repair cost may increase. It is recommended to obtain quotes from local auto repair shops to get a more accurate estimate based on the vehicle's make and model. Keep in mind that labor rates can fluctuate based on location and the complexity of the repair.

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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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