U0104 Pontiac Code - Lost Communication With Distance Sensing and Cruise Control Module
Quick Answer
The U0104 diagnostic trouble code (DTC) for Pontiac indicates that the vehicle's engine control module (ECM) has lost communication with the Distance Sensing and Cruise Control Module. Common causes include Faulty Distance Sensing and Cruise Control Module, Wiring or connector issues between the ECM and Distance Sensing and Cruise Control Module, ECM software malfunction. 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 Pontiac indicates Lost Communication With Distance Sensing and Cruise Control Module.
- Common causes
- Common causes include Faulty Distance Sensing and Cruise Control Module, Wiring or connector issues between the ECM and Distance Sensing and Cruise Control Module, ECM software malfunction.
- 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 U0104 Pontiac Description
The U0104 diagnostic trouble code (DTC) for Pontiac indicates that the vehicle's engine control module (ECM) has lost communication with the Distance Sensing and Cruise Control Module. This communication failure can potentially lead to issues with the vehicle's distance sensing and cruise control systems. The Distance Sensing and Cruise Control Module is responsible for controlling the functions related to adaptive cruise control, collision warning systems, and other safety features that rely on distance sensing technology.
Common Causes of U0104 Pontiac
- Faulty Distance Sensing and Cruise Control Module
- Wiring or connector issues between the ECM and Distance Sensing and Cruise Control Module
- ECM software malfunction
- Electrical interference or communication bus errors
- Water or corrosion damage to module components
Symptoms of U0104 Pontiac
- Malfunctioning adaptive cruise control system
- Inoperative collision warning system
- Loss of cruise control functionality
- Illumination of the Check Engine Light
- Erratic speed control behavior
How to Fix U0104 Pontiac
- Perform a thorough diagnostic scan to confirm the U0104 code and identify the specific cause of the communication failure.
- Inspect the wiring harness and connectors between the ECM and Distance Sensing and Cruise Control Module for any damage, corrosion, or loose connections.
- Test the Distance Sensing and Cruise Control Module for proper functionality and replace if necessary.
- Clear the code from the ECM memory and reset the system to establish communication between the modules.
- Test drive the vehicle to verify that the distance sensing and cruise control systems are operating correctly.
Cost to Fix U0104 Pontiac
The cost to repair the U0104 code on a Pontiac can vary depending on the specific cause of the issue and the labor rates in your area. In general, you can expect to pay anywhere from $200 to $500 for parts and labor to address this problem. Keep in mind that diagnostic time and labor rates at auto repair shops can fluctuate, so it's advisable to contact local shops for a more accurate estimate. Additionally, rates may be higher at dealerships or in metropolitan areas, while independent shops may offer more competitive prices.
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Frequently Asked Questions about U0104 Pontiac Code
1. What does the OBDII code U0104 mean on a Pontiac?
U0104 indicates a loss of communication between the vehicle’s main control module and the Distance Sensing and Cruise Control Module (DCSCM).
2. What are common symptoms of the U0104 code?
Symptoms include the cruise control not functioning, warning lights on the dashboard (like the check engine light), and possible reduced driver-assist features.
3. What causes the U0104 code to appear?
The code can be triggered by a faulty Distance Sensing and Cruise Control Module, damaged wiring, poor electrical connections, or issues with the CAN (Controller Area Network) bus communication.
4. Can I drive my Pontiac with the U0104 code?
While the vehicle may remain drivable, features like cruise control and distance sensing may be disabled, potentially reducing safety and convenience.
5. How do I diagnose the U0104 code?
Start by inspecting the wiring and connections to the Distance Sensing and Cruise Control Module. Use an advanced scan tool to check for communication errors on the CAN bus network.
6. What should I check first to fix the U0104 code?
Begin by inspecting the wiring harness and connections to the Distance Sensing and Cruise Control Module for damage, corrosion, or loose connections.
7. Does a faulty module always cause the U0104 code?
Not always. Other issues, such as a CAN bus network problem or a blown fuse, can also cause the loss of communication.
8. How much does it cost to repair the U0104 code?
Repair costs vary depending on the cause but can range from $100 for simple wiring repairs to $1,000 or more if the module itself needs replacement.
9. Can a software update fix the U0104 code?
In some cases, a software update for the vehicle’s control modules may resolve communication issues if they are caused by outdated programming.
10. Do I need a professional to fix the U0104 code?
While basic checks like inspecting wiring can be done at home, diagnosing and fixing advanced CAN bus or module issues typically require specialized tools and expertise.
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