AutoCodes – Lincoln – U0008 Lincoln

U0008 Lincoln Code - High Speed CAN Communication Bus (-) High

Quick Answer

Multiplexing is a method of sending 2 or more signals simultaneously over a single circuit. 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: U0008 Lincoln indicates High Speed CAN Communication Bus (-) High.
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 1,424

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 29, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U0008 Lincoln Description

Multiplexing is a method of sending 2 or more signals simultaneously over a single circuit. Multiplexing allows 2 or more electronic modules (nodes) to communicate over a twisted wire pair [data (+) and data (-)] network. The information or messages that can be communicated on these wires consists of commands, status or data. Multiplexing reduces the weight of the vehicle by reducing the number of redundant components and electrical wiring. The vehicle has 4 module communication networks connected to the DLC, located under the instrument panel. The communication networks are: HEV High Speed Controller Area Network (HS-CAN), High Speed Controller Area Network (HS-CAN), Medium Speed Controller Area Network (MS-CAN) and Infotainment Controller Area Network (I-CAN). The Diagnostic Trouble Code (DTC) U0008 sets when a High Speed Controller Area Network (HS-CAN) fault was present at a point in time. The fault is not currently present since the module is communicating with the scan tool.

OBDII Code U0008 Lincoln - High Speed CAN Communication Bus (-) High - AutoCodes.com — U0008 Lincoln Code - High Speed CAN Communication Bus (-) High

What does this mean?

What are the Possible Causes of the DTC U0008 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 U0008 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 U0008 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 U0008 Lincoln code?

Need more information on how to fix the U0008 Lincoln code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the U0008 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 U0008 Lincoln Code

1. What are the common symptoms of OBDII code U0008 in a Lincoln vehicle?

- Common symptoms include issues with the high-speed CAN communication bus, such as intermittent or complete loss of communication with various vehicle modules.

2. What can cause the U0008 OBDII code to appear in a Lincoln?

- The U0008 code is typically triggered by a high-speed CAN communication bus (-) high fault, which may be caused by wiring issues, faulty modules, or a damaged CAN bus network.

3. How can I diagnose the U0008 code in my Lincoln?

- Diagnosing the U0008 code involves using a professional OBDII scanner to retrieve the code, checking the integrity of the CAN bus wiring, inspecting all connected modules, and performing communication tests.

4. Is it safe to drive my Lincoln with the U0008 code present?

- It is not recommended to drive your Lincoln with the U0008 code present, as it can lead to potential communication failures between critical vehicle systems, affecting performance and safety.

5. Can I repair the U0008 code in my Lincoln myself?

- Repairing the U0008 code often requires specialized diagnostic equipment and technical expertise. It is recommended to seek assistance from a qualified mechanic or dealership for proper diagnosis and repair.

6. How much does it typically cost to fix the U0008 code in a Lincoln?

- The cost of fixing the U0008 code can vary depending on the root cause of the issue, the extent of the repairs needed, and labor rates. It is advisable to get a professional estimate for an accurate cost assessment.

7. Will resetting the OBDII code U0008 make it go away permanently?

- Simply resetting the U0008 code may temporarily clear the fault, but it is likely to reappear if the underlying issue with the high-speed CAN communication bus is not properly diagnosed and repaired.

8. Can a dead battery cause the U0008 code to trigger in a Lincoln?

- A dead or low battery voltage can potentially disrupt the CAN bus communication and trigger the U0008 code. Ensuring a fully charged and healthy battery is essential for proper vehicle communication.

9. Are there any preventative measures to avoid the U0008 code in my Lincoln?

- Regular vehicle maintenance, including checking and maintaining proper wiring connections, can help prevent issues with the high-speed CAN communication bus that may trigger the U0008 code.

10. Will the U0008 code affect the overall performance of my Lincoln vehicle?

- Yes, the U0008 code can impact the overall performance of your Lincoln by causing communication failures between critical vehicle systems, potentially leading to drivability issues and malfunctions.