AutoCodes – Ford – U0118 Ford

U0118 Ford Code - Lost Communication With Fuel Additive Control Module

Quick Answer

A Controller Area Network (CAN) is a vehicle bus standard designed to interconnect automotive devices without a host computer. Common causes include Top Off Fuel Additive Tank, Faulty Fuel Additive Sensor, Faulty Fuel Additive Control Module. 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: U0118 Ford indicates Lost Communication With Fuel Additive Control Module.
Common causes: Common causes include Top Off Fuel Additive Tank, Faulty Fuel Additive Sensor, Faulty Fuel Additive Control Module.
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 7,393

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 Mar 30, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U0118 Ford Description

A Controller Area Network (CAN) is a vehicle bus standard designed to interconnect automotive devices without a host computer. Operating information and commands are exchanged among the devices. The devices have programmed information about what messages are needed to be exchanged on the serial data circuits. CAN bus uses two dedicated wires for communication. The wires are called CAN high and CAN low. When the CAN bus is in idle mode, both lines carry 2.5V. When data bits are being transmitted, the CAN high line goes to 3.75V, and the CAN low drops to 1.25V, thereby generating a 2.5V differential between the lines. Since communication relies on a voltage differential between the two bus lines, the CAN bus is NOT sensitive to inductive spikes, electrical fields, or other noise. The Diagnostic Trouble Code (DTC) sets when a periodic message from the Fuel Additive Control Module has not been received.

OBDII Code U0118 Ford - Lost Communication With Fuel Additive Control Module - AutoCodes.com — U0118 Ford Code - Lost Communication With Fuel Additive Control Module

What does this mean?

What are the Possible Causes of the DTC U0118 Ford?

Top Off Fuel Additive Tank
Faulty Fuel Additive Sensor
Faulty Fuel Additive Control Module
Fuel Additive Control Module harness is open or shorted
Fuel Additive Control Module circuit poor electrical connection

How to Fix the DTC U0118 Ford?

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 U0118 Ford 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.

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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 U0118 Ford Code

1. What are the common symptoms of OBDII code U0118 in a Ford related to the Fuel Additive Control Module?

- Common symptoms include difficulty starting the vehicle, poor engine performance, and illuminated warning lights on the dashboard.

2. What are some possible causes of the U0118 code indicating Lost Communication With Fuel Additive Control Module in a Ford?

- Potential causes can include a faulty fuel additive control module, damaged wiring or connectors, software issues, or a malfunctioning powertrain control module (PCM).

3. How can I diagnose the U0118 code related to the Fuel Additive Control Module in my Ford?

- Diagnosis typically involves using a diagnostic scanner to retrieve the specific trouble codes, checking the wiring and connectors for any visible damage, and testing the fuel additive control module itself.

4. Are there any quick tips for repairing the U0118 code in a Ford due to Lost Communication With Fuel Additive Control Module?

- Quick repair tips may include checking and repairing any damaged wiring or connectors, ensuring the fuel additive control module is functioning correctly, and updating the vehicle's software if necessary.

5. Can the U0118 code in a Ford be safely driven with until it is repaired?

- It is generally not recommended to drive the vehicle with the U0118 code present, as it can lead to further damage or performance issues. It is best to address the issue promptly.

6. Is it possible to reset the U0118 code in a Ford without repairing the underlying issue?

- While clearing the trouble code may temporarily turn off the warning lights, the U0118 code will likely reappear until the root cause of the communication loss with the fuel additive control module is fixed.

7. How much can I expect to pay to repair the U0118 code indicating Lost Communication With Fuel Additive Control Module in my Ford?

- Repair costs can vary depending on the exact cause of the issue, but they may range from a few hundred to over a thousand dollars, including parts and labor.

8. Will the U0118 code in a Ford reset itself after a certain number of driving cycles?

- In some cases, if the underlying issue is resolved, the vehicle's computer may reset the code after a certain number of successful driving cycles without detecting the problem.

9. Can a DIY enthusiast with basic automotive skills fix the U0118 code related to the Fuel Additive Control Module in a Ford?

- Depending on the exact cause of the code, some DIY enthusiasts may be able to address the issue by checking and repairing wiring, connectors, or replacing the fuel additive control module.

10. How long does it typically take a mechanic to repair the U0118 code in a Ford caused by Lost Communication With Fuel Additive Control Module?

- The repair time can vary based on the diagnosis, availability of parts, and the mechanic's experience, but it may take a few hours to a full day to complete the repair.