AutoCodes – Ford – P0192 2008 Ford Fusion

P0192 2008 Ford Fusion Code - Fuel Rail Pressure Sensor Circuit Low Input

Quick Answer

The FRP sensor is a diaphragm strain gauge device. Common causes include Low or no fuel, Faulty Rail Pressure (FRP) Sensor, FRP harness is open or shorted. 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 2008 Ford Fusion indicates Fuel Rail Pressure Sensor Circuit Low Input.
Common causes: Common causes include Low or no fuel, Faulty Rail Pressure (FRP) Sensor, FRP harness is open or shorted.
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.

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Code Popularity 2,584

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Apr 24, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0192 2008 Ford Fusion Description

The FRP sensor is a diaphragm strain gauge device. The FRP sensor measures the pressure difference between the fuel rail and atmospheric pressure. The FRP sensor nominal output varies between 0.5 and 4.5 volts, with 0.5 volts corresponding to 0 MPa (0 psi) gauge and 4.5 volts corresponding to 26 MPa (3771 psi) gauge. The sensor can read vacuums and may lower the output voltage to slightly below 0.5 volts. This condition is normal and is usually the case after several hours of cold soak before the vehicle dome light is turned on. The FP module is energized at the same time the dome light is commanded on. A disabled or malfunctioning dome light does not affect the FP module control.
The FRP sensor is located on the fuel rail, and provides a feedback signal to indicate the fuel rail pressure to the Powertrain Control Module (PCM). The PCM uses the FRP signal to command the correct injector timing and pulse width for correct fuel delivery at all speed and load conditions. The FRP sensor, along with the fuel volume regulator (part of the fuel injection pump), form a closed loop fuel pressure control system. An electrically faulted FRP sensor results in the deactivation of the fuel injection pump. Fuel pressure to injectors is then provided only by the FP module. When the fuel injection pump is de-energized and the injectors are active, the fuel rail pressure is approximately 70 kPa (10 psi) lower than FP module pressure due to the pressure drop across the fuel injection pump. Thus, if the FP module pressure is 448 kPa (65 psi), then the fuel rail pressure would be approximately 379 kPa (55 psi) if the injectors are active.

OBDII Code P0192 2008 Ford Fusion - Fuel Rail Pressure Sensor Circuit Low Input - AutoCodes.com — P0192 2008 Ford Fusion Code - Fuel Rail Pressure Sensor Circuit Low Input

What does this mean?

What are the Possible Causes of the DTC P0192 2008 Ford Fusion?

Low or no fuel
Faulty Rail Pressure (FRP) Sensor
FRP harness is open or shorted
FRP circuit poor electrical connection
Faulty Fuel Pump

How to Fix the DTC P0192 2008 Ford Fusion?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0192 2008 Ford Fusion code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P0192 2008 Ford Fusion code?

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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.

Frequently Asked Questions about P0192 2008 Ford Fusion Code

1. What are common symptoms of OBDII code P0192 in a 2008 Ford Fusion?

- Common symptoms include poor engine performance, stalling, rough idle, and a decrease in fuel efficiency.

2. What does the OBDII code P0192 in a 2008 Ford Fusion indicate?

- The code P0192 indicates a low input from the fuel rail pressure sensor circuit in the vehicle.

3. What are the possible causes of OBDII code P0192 in a 2008 Ford Fusion?

- Possible causes include a faulty fuel rail pressure sensor, wiring issues in the circuit, low fuel pressure, or a problem with the fuel pump.

4. How can I diagnose the OBDII code P0192 in a 2008 Ford Fusion?

- Diagnosing involves using a scan tool to read the code, checking the fuel rail pressure sensor for proper operation, and inspecting the wiring for any damage or corrosion.

5. Can driving with the OBDII code P0192 in a 2008 Ford Fusion cause further damage?

- Driving with this code may lead to poor engine performance and potentially cause damage to the fuel system over time, so it's recommended to address the issue promptly.

6. How can I repair OBDII code P0192 in a 2008 Ford Fusion?

- Repair typically involves replacing the fuel rail pressure sensor if it's faulty, repairing any damaged wiring, ensuring proper fuel pressure, and clearing the code with a scan tool.

7. Is it safe to continue driving my 2008 Ford Fusion with the OBDII code P0192 present?

- It is not recommended to continue driving with this code as it can lead to engine issues and potentially cause further damage to the vehicle.

8. Can a DIY enthusiast fix OBDII code P0192 in a 2008 Ford Fusion?

- Depending on the individual's skill level, a DIY enthusiast may be able to address this code by following repair guides and using the necessary tools for diagnosis and replacement.

9. How much does it cost to repair OBDII code P0192 in a 2008 Ford Fusion at a mechanic?

- The cost of repair can vary depending on the exact cause of the issue, but it may range from $150 to $400, including parts and labor.

10. Will resetting the OBDII code P0192 in a 2008 Ford Fusion make it go away permanently?

- Resetting the code may temporarily clear it, but if the underlying issue causing the code is not addressed, it is likely to reappear. It's essential to diagnose and repair the root cause to prevent the code from returning.