AutoCodes – Lincoln – U0073 Lincoln

U0073 Lincoln Code - Control Module Communication Bus OFF

Quick Answer

The Controller Area Network (CAN) is a standard bus system in vehicles that enables the connection of automotive devices without the need for a host computer. Common causes include Diagnosis of this Diagnostic Trouble Code (DTC) is accomplished via the vehicle symptom(s), Check for more codes, Faulty 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: U0073 Lincoln indicates Control Module Communication Bus OFF.
Common causes: Common causes include Diagnosis of this Diagnostic Trouble Code (DTC) is accomplished via the vehicle symptom(s), Check for more codes, Faulty 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 1,739

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 22, 2023

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U0073 Lincoln Description

The Controller Area Network (CAN) is a standard bus system in vehicles that enables the connection of automotive devices without the need for a host computer. The exchange of operating information and commands among devices is facilitated by pre-programmed information about the required message exchange on the serial data circuits. Communication is carried out using two dedicated wires, known as CAN high and CAN low, with both lines carrying 2.5V when the CAN bus is in idle mode. During the transmission of data bits, the CAN high line increases to 3.75V while the CAN low drops to 1.25V, creating 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 message that includes the transmitter device availability has not been received.

OBDII Code U0073 Lincoln - Control Module Communication Bus OFF - AutoCodes.com — U0073 Lincoln Code - Control Module Communication Bus OFF

What does this mean?

What are the Possible Causes of the DTC U0073 Lincoln?

Diagnosis of this Diagnostic Trouble Code (DTC) is accomplished via the vehicle symptom(s)
Check for more codes
Faulty Control Module
Control Module harness is open or shorted
Control Module circuit poor electrical connection

How to Fix the DTC U0073 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 U0073 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 U0073 Lincoln code?

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Need Help with the Code?

Get the U0073 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 U0073 Lincoln Code

1. What are the common symptoms of OBDII code U0073 in a Lincoln vehicle?

The common symptoms of OBDII code U0073 in a Lincoln include illuminated Check Engine light, issues with vehicle communication systems, and potential loss of communication with control modules.

2. What does the OBDII code U0073 in a Lincoln indicate?

OBDII code U0073 in a Lincoln indicates a communication bus OFF error related to the control module communication system.

3. What are the possible causes of OBDII code U0073 in a Lincoln?

Possible causes of OBDII code U0073 in a Lincoln include faulty control modules, damaged wiring or connectors, software issues, or a malfunctioning communication network.

4. How can I diagnose OBDII code U0073 in my Lincoln?

Diagnosing OBDII code U0073 in a Lincoln involves using a diagnostic scanner to retrieve the code, checking for other related codes, inspecting wiring and connectors, and testing the control modules and communication network.

5. How can I repair OBDII code U0073 in my Lincoln?

Repairing OBDII code U0073 in a Lincoln may involve addressing the specific cause, such as replacing faulty control modules, repairing damaged wiring, updating software, or reestablishing communication within the network.

6. Can OBDII code U0073 in a Lincoln cause other issues with the vehicle?

Yes, OBDII code U0073 in a Lincoln can cause other issues such as loss of communication with various control modules, affecting the performance of different vehicle systems.

7. Is it safe to continue driving my Lincoln with OBDII code U0073 present?

It is generally not recommended to continue driving your Lincoln with OBDII code U0073 present, as it can lead to potential communication issues and affect the overall performance and safety of the vehicle.

8. How much does it typically cost to fix OBDII code U0073 in a Lincoln?

The cost to fix OBDII code U0073 in a Lincoln can vary depending on the specific cause of the issue, but it may range from a few hundred to a thousand dollars, including parts and labor.

9. Can I reset OBDII code U0073 in my Lincoln using a simple reset tool?

Resetting OBDII code U0073 in a Lincoln may temporarily clear the code, but it is important to diagnose and address the underlying issue to prevent the code from reoccurring.

10. Will OBDII code U0073 in a Lincoln affect the vehicle's emissions or fuel efficiency?

OBDII code U0073 in a Lincoln may not directly affect emissions or fuel efficiency, but addressing the issue promptly is important to ensure proper communication among control modules and optimal vehicle performance.