AutoCodes – Lincoln – U0298 Lincoln

U0298 Lincoln 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 Lincoln 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 609

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

What does this mean?

What are the Possible Causes of the DTC U0298 Lincoln?

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 Lincoln?

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 Lincoln 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 U0298 Lincoln code?

Need more information on how to fix the U0298 Lincoln code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the U0298 Lincoln 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 Lincoln Code

1. What does the OBDII code U0298 mean on a Lincoln?

The U0298 code indicates that the vehicle has lost communication with the DC to DC Converter Control Module 'A', which is responsible for managing voltage conversion and power distribution in the electrical system.

2. What are the common symptoms of code U0298 in a Lincoln?

Symptoms may include a check engine light, reduced charging system performance, electrical system malfunctions, or issues with hybrid or start/stop systems if equipped.

3. What causes the U0298 code to appear?

Common causes include faulty wiring or connectors, a failed DC to DC Converter Control Module, software glitches in the module, or issues with the power supply to the module.

4. Can I drive my Lincoln with the U0298 code active?

While the vehicle may still be drivable, reduced electrical performance or charging issues could lead to a drained battery or other complications, so itâ€™s best to address the issue promptly.

5. How do I diagnose the U0298 code in a Lincoln?

Start by checking the wiring and connectors to the DC to DC Converter Control Module for damage or corrosion. Use a diagnostic scanner to check for other related codes and test the module's power supply and communication circuits.

6. What repairs might fix the U0298 code?

Repairs can include fixing damaged wiring, cleaning or replacing corroded connectors, reprogramming or updating the moduleâ€™s software, or replacing the DC to DC Converter Control Module if itâ€™s faulty.

7. Is the U0298 code specific to Lincoln vehicles?

No, the U0298 code is a generic communication error code that can appear in various makes and models, but its causes and symptoms may vary depending on the vehicle.

8. How much does it cost to repair the U0298 code on a Lincoln?

Repair costs can vary depending on the root cause, but diagnosing and fixing wiring or connector issues may cost $100-$300, while replacing the DC to DC Converter Control Module could range from $400 to $1,000 or more.

9. Can a weak battery cause the U0298 code in a Lincoln?

Yes, a weak or failing battery can disrupt the power supply to the DC to DC Converter Control Module and trigger the U0298 code.

10. Do I need professional help to fix the U0298 code on my Lincoln?

If youâ€™re experienced with vehicle diagnostics and repairs, you can attempt to fix the issue yourself. However, for complex electrical or module replacement tasks, professional assistance is recommended.