AutoCodes – Saturn – U0104 Saturn

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

Quick Answer

Modules connected to the high speed General Motor Local Area Network (GMLAN) serial data circuits monitor for serial data communications during normal vehicle operation. 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 Saturn 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 3,259

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 U0104 Saturn Description

Modules connected to the high speed General Motor Local Area Network (GMLAN) serial data circuits monitor for serial data communications during normal vehicle operation. Operating information and commands are exchanged among the modules. The modules have prerecorded information about what messages are needed to be exchanged on the serial data circuits, for each virtual network. The messages are supervised and also, some periodic messages are used by the receiver module as an availability indication of the transmitter module. The supervision time-out period is 250 ms. Each message contains the identification number of the transmitter module.

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

What does this mean?

What are the Possible Causes of the DTC U0104 Saturn?

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 Saturn?

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 Saturn 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 U0104 Saturn Code

1. What does the OBDII code U0104 mean on a Saturn?

U0104 indicates a loss of communication with the Distance Sensing and Cruise Control Module (DSCCM), which could affect systems like adaptive cruise control.

2. What are the common symptoms of code U0104 in a Saturn?

Symptoms may include the cruise control not functioning, warning lights on the dashboard, and erratic behavior of driver-assist features like collision alerts.

3. What are the possible causes of U0104 on a Saturn?

Common causes include a faulty DSCCM, damaged wiring or connectors, a malfunctioning CAN bus network, or a failing powertrain control module (PCM).

4. Can I still drive my Saturn with a U0104 code?

Yes, you can usually drive the vehicle, but features like cruise control and distance sensing may not work, potentially affecting safety.

5. How do I diagnose the U0104 code on my Saturn?

Start by inspecting the wiring and connectors to the DSCCM, checking for damage or corrosion. Use a scan tool to confirm communication errors on the CAN bus.

6. What are the repair options for a U0104 code in a Saturn?

Repairs may include fixing or replacing damaged wiring, repairing connectors, updating software in control modules, or replacing the DSCCM if faulty.

7. Can a weak battery cause the U0104 code in a Saturn?

Yes, a weak or failing battery can disrupt communication between modules and trigger the U0104 code.

8. How much does it cost to fix a U0104 code in a Saturn?

Costs vary depending on the issue, but diagnostics may cost $100-$150, and repairs like replacing the DSCCM can range from $300 to $800.

9. Can a blown fuse cause the U0104 code in a Saturn?

Yes, a blown fuse related to the DSCCM or CAN bus system can disrupt communication and trigger the code.

10. Will clearing the U0104 code with a scan tool fix the problem?

Clearing the code may turn off the warning temporarily, but the underlying issue must be resolved to prevent the code from returning.

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