AutoCodes – Cadillac – U1041 Cadillac

U1041 Cadillac Code - Lost Communications With Electronic Brake Control Module

Quick Answer

Modules connected to the class 2 serial data circuit monitor for serial data communications during normal vehicle operation. Common causes include Faulty Electronic Brake Control Module (EBCM), Electronic Brake Control Module harness is open or shorted, Electronic Brake 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: U1041 Cadillac indicates Lost Communications With Electronic Brake Control Module.
Common causes: Common causes include Faulty Electronic Brake Control Module (EBCM), Electronic Brake Control Module harness is open or shorted, Electronic Brake 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.

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Code Popularity 1,095

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 22, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U1041 Cadillac Description

Modules connected to the class 2 serial data circuit monitor for serial data communications during normal vehicle operation. Operating information and commands are exchanged among the modules. When a module receives a message for a critical operating parameter, the module records the identification number of the module which sent the message for the state of health monitoring/node alive messages. A critical operating parameter is one which, when not received, requires that the module use a default value for that parameter. Once an identification number is learned by a module, it will monitor for that module node alive message. Each module on the class 2 serial data circuit is required to send a Node Alive message every 2 seconds. When no message is detected from a learned identification number for 5 seconds, a Diagnostic Trouble Code (DTC) U1041 is set.

OBDII Code U1041 Cadillac - Lost Communications With Electronic Brake Control Module - AutoCodes.com — U1041 Cadillac Code - Lost Communications With Electronic Brake Control Module

What does this mean?

What are the Possible Causes of the DTC U1041 Cadillac?

Faulty Electronic Brake Control Module (EBCM)
Electronic Brake Control Module harness is open or shorted
Electronic Brake Control Module circuit poor electrical connection

How to Fix the DTC U1041 Cadillac?

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 U1041 Cadillac 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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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 U1041 Cadillac Code

1. What does the OBDII code U1041 mean on a Cadillac?

U1041 indicates a loss of communication between the Electronic Brake Control Module (EBCM) and other control modules in the vehicle.

2. What are the common symptoms of code U1041 on a Cadillac?

Symptoms may include the ABS warning light on the dashboard, loss of ABS functionality, traction control issues, or intermittent braking system performance.

3. What causes the U1041 code to appear?

Common causes include a faulty Electronic Brake Control Module (EBCM), damaged wiring or connectors, issues with the CAN bus network, or a weak battery.

4. How do I diagnose code U1041 on my Cadillac?

Use an OBDII scanner to confirm the code, inspect the wiring and connectors around the EBCM, check for corrosion, and test the CAN bus communication network.

5. Can a weak battery trigger the U1041 code?

Yes, a weak or failing battery can cause communication issues between modules, potentially triggering the U1041 code.

6. Is it safe to drive with code U1041 on my Cadillac?

While the vehicle may still be driveable, the loss of communication with the EBCM can disable critical safety features like ABS and traction control, which can pose a safety risk.

7. How do I fix the U1041 code on my Cadillac?

Repairs may include replacing the EBCM, repairing damaged wiring or connectors, updating module software, or ensuring the battery and charging system are functioning properly.

8. How much does it cost to repair the U1041 code on a Cadillac?

Repair costs vary depending on the issue, ranging from $50 for a simple wiring repair to over $1,000 if the EBCM needs replacement.

9. Can I clear the U1041 code without fixing the issue?

While you can clear the code with an OBDII scanner, it will likely return unless the underlying problem is addressed.

10. What tools are needed to troubleshoot U1041 on a Cadillac?

Youâ€™ll need an OBDII scanner with ABS capabilities, a multimeter for testing wiring, and possibly a wiring diagram for your specific Cadillac model.