AutoCodes – Lincoln – U0138 Lincoln

U0138 Lincoln Code - Lost Communication With All Terrain Control Module

Quick Answer

The Powertrain Control Module (PCM) continuously monitors the Controller Area Network (CAN) for messages from the All-Terrain Control Module (ATCM). Common causes include Faulty All-Terrain Control Module, All-Terrain Control Module harness is open or shorted, All-Terrain Control Module 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
U0138 Lincoln indicates Lost Communication With All Terrain Control Module.
Common causes
Common causes include Faulty All-Terrain Control Module, All-Terrain Control Module harness is open or shorted, All-Terrain Control Module 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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 597
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Mar 31, 2020
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Code U0138 Lincoln Description

The Powertrain Control Module (PCM) continuously monitors the Controller Area Network (CAN) for messages from the All-Terrain Control Module (ATCM). This Diagnostic Trouble Code (DTC) sets when the PCM does not receive the ATCM message within the defined amount of time.
OBDII Code U0138 Lincoln - Lost Communication With All Terrain Control Module - AutoCodes.com
U0138 Lincoln Code - Lost Communication With All Terrain Control Module

What are the Possible Causes of the DTC U0138 Lincoln?

  • Faulty All-Terrain Control Module
  • All-Terrain Control Module harness is open or shorted
  • All-Terrain Control Module circuit poor electrical connection

How to Fix the DTC U0138 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 U0138 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 U0138 Lincoln code?

Need more information on how to fix the U0138 Lincoln code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the U0138 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 U0138 Lincoln Code

1. What are the common symptoms of OBDII code U0138 in a Lincoln vehicle?

- Common symptoms include the ABS warning light being illuminated, traction control system malfunctions, and potential loss of communication with the All Terrain Control Module.

2. What are the possible causes of the U0138 code in a Lincoln vehicle?

- The U0138 code typically indicates a communication problem between the vehicle's modules, which could be caused by a faulty All Terrain Control Module, damaged wiring, or a poor electrical connection.

3. How can I diagnose the U0138 code in my Lincoln vehicle?

- Diagnosing the U0138 code involves using a diagnostic scanner to retrieve the trouble codes, checking the communication lines for any damage, and testing the All Terrain Control Module for functionality.

4. Can I still drive my Lincoln with the U0138 code present?

- It is not advisable to drive your Lincoln with the U0138 code present, as it can affect the proper functioning of the traction control system, potentially compromising vehicle safety.

5. How can I repair the U0138 code in my Lincoln vehicle?

- Repairing the U0138 code involves addressing the underlying communication issue, which may require replacing the All Terrain Control Module, repairing damaged wiring, or ensuring proper electrical connections.

6. Is it safe to continue driving if the U0138 code comes on intermittently?

- It is not recommended to continue driving if the U0138 code appears intermittently, as it can indicate an underlying issue that needs to be addressed to maintain the vehicle's safety and performance.

7. Are there any DIY fixes for the U0138 code in a Lincoln vehicle?

- DIY fixes for the U0138 code may include checking and cleaning electrical connections, inspecting wiring for damage, and ensuring proper module installation, but more complex issues may require professional diagnosis and repair.

8. Can a low battery voltage cause the U0138 code in a Lincoln vehicle?

- Yes, a low battery voltage can potentially cause communication issues between modules, leading to the U0138 code in a Lincoln vehicle. It is important to ensure the battery is in good condition.

9. Will resetting the trouble codes make the U0138 code disappear permanently?

- Resetting the trouble codes may temporarily clear the U0138 code, but if the underlying issue causing the communication problem is not addressed, the code is likely to reappear.

10. How much can I expect to pay for professional repairs related to the U0138 code in a Lincoln vehicle?

- The cost of professional repairs for the U0138 code can vary depending on the specific cause of the issue, but it is advisable to budget for diagnostic fees, replacement parts, and labor costs, which can range from a few hundred to over a thousand dollars.

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