AutoCodes – Generic – U0104

U0104 Code - Lost Communication With Distance Sensing and Cruise Control Module

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 Distance Sensing and Cruise Control (DSCC) Module, DSCC Module harness is open or shorted, DSCC 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: U0104 indicates Lost Communication With Distance Sensing and Cruise Control Module.
Common causes: Common causes include Faulty Distance Sensing and Cruise Control (DSCC) Module, DSCC Module harness is open or shorted, DSCC 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 34,853

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 30, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U0104 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 Distance Sensing and Cruise Control Module has not been received.

OBDII Code U0104 - Lost Communication With Distance Sensing and Cruise Control Module - AutoCodes.com — U0104 Code - Lost Communication With Distance Sensing and Cruise Control Module

What does this mean?

What are the Possible Causes of the DTC U0104?

Faulty Distance Sensing and Cruise Control (DSCC) Module
DSCC Module harness is open or shorted
DSCC Module circuit poor electrical connection

How to Fix the DTC U0104?

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 U0104 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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Get the U0104 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

U0104 Buick — Lost Communication With Distance Sensing and Cruise Control Module
U0104 Cadillac — Lost Communication With Distance Sensing and Cruise Control Module
U0104 Chevrolet — Lost Communication With Distance Sensing and Cruise Control Module
U0104 Ford — Lost Communication Cruise Control Module
U0104 GMC — Lost Communication With Distance Sensing and Cruise Control Module
U0104 Infiniti — Lost Communication With Advanced Driver Assistance Systems Control Module
U0104 Lincoln — Lost Communication Cruise Control Module
U0104 Mercury — Lost Communication Cruise Control Module
U0104 Nissan — Lost Communication With Advanced Driver Assistance Systems Control Module
U0104 Pontiac — Lost Communication With Distance Sensing and Cruise Control Module
U0104 Saturn — Lost Communication With Distance Sensing and Cruise Control Module

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 U0104 Code

1. What are the common symptoms of OBDII code U0104?

- Common symptoms include loss of distance sensing functionality, non-functional cruise control, and illuminated warning lights on the dashboard.

2. What does the OBDII code U0104 indicate?

- The code signifies that there is a communication problem between the vehicle's control module and the distance sensing and cruise control module.

3. What are the possible causes of OBDII code U0104?

- Possible causes include faulty wiring or connections, a defective distance sensing and cruise control module, a malfunctioning control module, or software issues.

4. How can I diagnose the issue related to OBDII code U0104?

- Diagnosing the problem involves conducting a thorough inspection of the wiring, connectors, and modules involved. It may also require using a diagnostic scanner to retrieve additional codes and data.

5. Can I still drive my vehicle with the U0104 code present?

- It is not recommended to drive the vehicle with the U0104 code present, as it may affect the proper functioning of important safety features like distance sensing and cruise control.

6. How can I repair OBDII code U0104?

- Repair methods may include checking and repairing any damaged wiring or connectors, replacing the distance sensing and cruise control module if necessary, and reprogramming control modules.

7. Is it possible to reset the U0104 code without repairs?

- While clearing the code may temporarily turn off the warning lights, it is important to address the underlying issue to prevent the code from reoccurring and ensure the proper functioning of the affected systems.

8. Are there any recalls or technical service bulletins related to OBDII code U0104?

- It is advisable to check with your vehicle manufacturer or authorized dealership for any recalls or technical service bulletins related to the U0104 code to see if your vehicle is affected.

9. Can weather conditions impact the occurrence of code U0104?

- Extreme weather conditions, such as heavy rain or snow, can potentially impact the communication between modules and trigger the U0104 code. Ensuring proper sealing and protection can help prevent weather-related issues.

10. How can I prevent OBDII code U0104 from happening again?

- Regular maintenance checks, timely repairs of wiring and connectors, and addressing any warning signs promptly can help prevent the reoccurrence of the U0104 code and maintain the proper functionality of the affected systems.