AutoCodes – Ford – P1181 1999 Ford F150

P1181 1999 Ford F150 Code - Fuel Delivery System - High

Quick Answer

The Powertrain Control Module (PCM) receives Fuel Tank Pressure (FTP) information from the Natural Gas module (NG), which uses the information to infer Fuel Rail Pressure (FRP). Common causes include Restriction in the fuel line, Plugged fuel filter, Faulty Fuel Pressure Regulator. 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: P1181 1999 Ford F150 indicates Fuel Delivery System - High .
Common causes: Common causes include Restriction in the fuel line, Plugged fuel filter, Faulty Fuel Pressure Regulator.
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 1,913

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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Table of contents Created and updated by William Orellana on Jul 08, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1181 1999 Ford F150 Description

OBDII Code P1181 1999 Ford F150 - Fuel Delivery System - High - AutoCodes.com — P1181 1999 Ford F150 Code - Fuel Delivery System - High

What does this mean?

What are the Possible Causes of the DTC P1181 1999 Ford F150?

Restriction in the fuel line
Plugged fuel filter
Faulty Fuel Pressure Regulator
Faulty Fuel Rail Solenoid Shutoff Valve
Fuel Rail Solenoid Shutoff Valve harness is open or shorted
Fuel Rail Solenoid Shutoff Valve circuit poor electrical connection

How to Fix the DTC P1181 1999 Ford F150?

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 P1181 1999 Ford F150 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 P1181 1999 Ford F150 code?

Need more information on how to fix the P1181 1999 Ford F150 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1181 1999 Ford F150 code diagnosed by a professional: Find a repair shop in your area

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 P1181 1999 Ford F150 Code

1. What are the common symptoms of OBDII code P1181 in a 1999 Ford F150 related to the fuel delivery system?

The common symptoms include rough idling, engine stalling, decreased fuel efficiency, and difficulty starting the vehicle.

2. What are the possible causes of OBDII code P1181 in a 1999 Ford F150 indicating a high fuel delivery system issue?

The code P1181 in a 1999 Ford F150 can be triggered by a faulty fuel pressure regulator, clogged fuel filter, or a malfunctioning fuel pump.

3. How can I diagnose the high fuel delivery system issue causing OBDII code P1181 in my 1999 Ford F150?

You can diagnose the issue by checking the fuel pressure using a gauge, inspecting the fuel filter for clogs, and testing the fuel pump for proper functionality.

4. What are some repair tips for fixing OBDII code P1181 in a 1999 Ford F150 related to the fuel delivery system?

Repair tips include replacing the fuel pressure regulator, cleaning or replacing the fuel filter, and inspecting the fuel pump for any signs of wear or damage.

5. Can a DIY enthusiast fix OBDII code P1181 in a 1999 Ford F150 by addressing the fuel delivery system issue?

Yes, some DIY enthusiasts with automotive knowledge and experience can address the high fuel delivery system issue causing code P1181 by following repair manuals and guides.

6. Are there any safety precautions to consider when working on the fuel delivery system of a 1999 Ford F150 to resolve OBDII code P1181?

Yes, it is important to work in a well-ventilated area, wear appropriate safety gear such as gloves and eye protection, and relieve fuel system pressure before performing any repairs.

7. Can a faulty oxygen sensor trigger OBDII code P1181 in a 1999 Ford F150 related to the fuel delivery system?

While less common, a faulty oxygen sensor can contribute to an incorrect fuel mixture, potentially leading to a high fuel delivery system issue and triggering code P1181.

8. Is it necessary to reset the OBDII system after repairing the high fuel delivery system issue causing code P1181 in a 1999 Ford F150?

Yes, it is recommended to reset the OBDII system using a scan tool after repairing the fuel delivery system issue to clear the code P1181 and ensure proper monitoring of the vehicle's performance.

9. How can regular maintenance help prevent OBDII code P1181 related to the fuel delivery system in a 1999 Ford F150?

Regular maintenance such as changing the fuel filter at recommended intervals, using high-quality fuel, and keeping the fuel system clean can help prevent issues leading to code P1181.

10. What is the significance of addressing OBDII code P1181 in a 1999 Ford F150 promptly to resolve the high fuel delivery system issue?

Addressing code P1181 promptly is crucial to maintain the vehicle's performance, fuel efficiency, and overall reliability by ensuring proper fuel delivery system function and preventing potential engine damage.