AutoCodes – Ford – P0190 2010 Ford Fusion

P0190 2010 Ford Fusion Code - Fuel Rail Pressure Sensor Circuit Malfunction

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: P0190 2010 Ford Fusion indicates Fuel Rail Pressure Sensor Circuit Malfunction.
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 5,891

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 P0190 2010 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 P0190 2010 Ford Fusion - Fuel Rail Pressure Sensor Circuit Malfunction - AutoCodes.com — P0190 2010 Ford Fusion Code - Fuel Rail Pressure Sensor Circuit Malfunction

What does this mean?

What are the Possible Causes of the DTC P0190 2010 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 P0190 2010 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 P0190 2010 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 P0190 2010 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 P0190 2010 Ford Fusion Code

1. What are the common symptoms of OBDII code P0190 in a 2010 Ford Fusion?

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

2. What does the OBDII code P0190 indicate in a 2010 Ford Fusion?

- OBDII code P0190 indicates a Fuel Rail Pressure Sensor Circuit Malfunction in a 2010 Ford Fusion.

3. What are the possible causes of OBDII code P0190 in a 2010 Ford Fusion?

- Possible causes include a faulty fuel rail pressure sensor, issues with the sensor circuit wiring, or problems with the fuel pressure regulator.

4. How can I diagnose the OBDII code P0190 in my 2010 Ford Fusion?

- To diagnose the issue, you can use an OBDII scanner to read the code, inspect the fuel rail pressure sensor and wiring, and check for any fuel leaks or pressure issues.

5. Can I still drive my 2010 Ford Fusion with OBDII code P0190?

- It is not recommended to drive your vehicle with OBDII code P0190, as it can lead to engine performance issues and potential damage if left unresolved.

6. How can I repair OBDII code P0190 in my 2010 Ford Fusion?

- Repair options include replacing the fuel rail pressure sensor, repairing any damaged wiring, or addressing any fuel pressure regulator issues.

7. Will resetting the OBDII code P0190 in my 2010 Ford Fusion make it go away?

- Resetting the code may temporarily clear the warning light, but the underlying issue causing the code will need to be addressed to prevent it from reoccurring.

8. Can a DIY enthusiast fix OBDII code P0190 in a 2010 Ford Fusion?

- Depending on their skill level, a DIY enthusiast may be able to diagnose and repair OBDII code P0190 by following repair guides or consulting with professional mechanics.

9. How much does it typically cost to repair OBDII code P0190 in a 2010 Ford Fusion?

- The cost of repairing OBDII code P0190 can vary depending on the specific issue, but it may range from $100 to $300 for parts and labor.

10. Will ignoring OBDII code P0190 in my 2010 Ford Fusion cause further damage?

- Ignoring OBDII code P0190 can lead to decreased engine performance, lower fuel efficiency, and potential damage to other engine components over time, so it is best to address the issue promptly.