AutoCodes – Ford – U0298 Ford

U0298 Ford Code - Lost Communication With DC To DC Converter Control Module 'A'

Quick Answer

A Controller Area Network (CAN) is a vehicle bus standard designed to interconnect automotive devices without a host computer. Common causes include Faulty DC To DC Converter Control Module 'A', DC To DC Converter Control Module 'A' harness is open or shorted, DC To DC Converter Control Module 'A' circuit poor electrical connection. 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: U0298 Ford indicates Lost Communication With DC To DC Converter Control Module 'A'.
Common causes: Common causes include Faulty DC To DC Converter Control Module 'A', DC To DC Converter Control Module 'A' harness is open or shorted, DC To DC Converter Control Module 'A' circuit poor electrical connection.
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 2,437

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 06, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U0298 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 DC To DC Converter Control Module 'A' has not been received.

OBDII Code U0298 Ford - Lost Communication With DC To DC Converter Control Module 'A' - AutoCodes.com — U0298 Ford Code - Lost Communication With DC To DC Converter Control Module 'A'

What does this mean?

What are the Possible Causes of the DTC U0298 Ford?

Faulty DC To DC Converter Control Module 'A'
DC To DC Converter Control Module 'A' harness is open or shorted
DC To DC Converter Control Module 'A' circuit poor electrical connection

How to Fix the DTC U0298 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 U0298 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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Need more information on how to fix the U0298 Ford code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the U0298 Ford 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 U0298 Ford Code

1. What are common symptoms of OBDII code U0298 in a Ford vehicle?

- Common symptoms include issues with the DC to DC converter, such as loss of power or poor performance, dashboard warning lights, and difficulty starting the vehicle.

2. What can cause the OBDII code U0298 in a Ford, indicating "Lost Communication With DC To DC Converter Control Module 'A'"?

- Possible causes may include a faulty DC to DC converter control module, damaged wiring or connectors, software issues, or a malfunctioning power supply.

3. How is the OBDII code U0298 in a Ford typically diagnosed?

- Diagnosis involves using an OBDII scanner to retrieve the code, checking for additional related codes, inspecting the wiring and connectors, and testing the DC to DC converter control module for functionality.

4. Is it safe to continue driving with the U0298 trouble code in a Ford?

- It is not recommended to continue driving with this code present, as it can lead to further electrical issues and potentially cause damage to the vehicle's systems.

5. Can the U0298 code be repaired by resetting the vehicle's computer?

- While clearing the code may temporarily turn off the warning light, it will not address the underlying issue causing the communication loss with the DC to DC converter control module.

6. Are there any DIY repair tips for fixing the U0298 trouble code in a Ford?

- DIY repair options are limited for this code and may involve checking and securing wiring connections, but it is recommended to consult a professional for accurate diagnosis and repair.

7. How much does it typically cost to repair the U0298 code in a Ford?

- Repair costs can vary depending on the exact cause of the code, but expenses may include parts replacement, labor costs, and diagnostic fees, ranging from a few hundred to over a thousand dollars.

8. Can a U0298 trouble code be caused by a dead battery in a Ford vehicle?

- A dead or low battery can sometimes trigger communication issues, but it is not a common direct cause of the U0298 code related to the DC to DC converter control module.

9. Is the U0298 code specific to certain Ford models or years?

- The U0298 code related to "Lost Communication With DC To DC Converter Control Module 'A'" can be found in various Ford models, but specific applicability may vary by year and model.

10. How urgent is it to address the U0298 trouble code in a Ford?

- It is important to address the U0298 code promptly to prevent potential electrical issues, loss of power, or further damage to the vehicle's systems.