B3928 Code - Incorrect Environmental Identifier Received from Telematics Communication Interface Control Module
Quick Answer
The diagnostic trouble code B3928 indicates that the vehicle's Telematics Communication Interface Control Module has received an incorrect environmental identifier. Common causes include Faulty wiring connections, Malfunctioning Telematics Communication Interface Control Module, Software glitches. 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
- B3928 indicates Incorrect Environmental Identifier Received from Telematics Communication Interface Control Module.
- Common causes
- Common causes include Faulty wiring connections, Malfunctioning Telematics Communication Interface Control Module, Software glitches.
- 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 B3928 Description
The diagnostic trouble code B3928 indicates that the vehicle's Telematics Communication Interface Control Module has received an incorrect environmental identifier. This module is responsible for managing various communication functions within the vehicle, such as GPS tracking, emergency services, and remote diagnostics. When an incorrect environmental identifier is received, it can lead to issues with the vehicle's telematics system, affecting its ability to accurately track the vehicle's location, provide emergency assistance, and communicate with external services.
Common Causes of B3928
- Faulty wiring connections
- Malfunctioning Telematics Communication Interface Control Module
- Software glitches
- Water damage to the module
- Electrical interference
Symptoms of B3928
- Inaccurate GPS tracking
- Loss of communication with emergency services
- Error messages related to the telematics system
- Difficulty accessing remote diagnostic services
- Malfunctioning navigation system
How to Fix B3928
- Begin by conducting a thorough inspection of the wiring connections related to the Telematics Communication Interface Control Module.
- Check for any signs of water damage or corrosion on the module and its connectors.
- Use diagnostic tools to scan for software glitches and update the module's software if necessary.
- If the module is found to be faulty, replace it with a new one and reprogram it to the vehicle's specifications.
- Test the vehicle's telematics system to ensure that the issue has been resolved and that all functions are working correctly.
Cost to Fix B3928
The typical repair costs for addressing the B3928 code can vary depending on the specific cause of the issue. In general, replacing a faulty Telematics Communication Interface Control Module can cost anywhere from $200 to $600, including parts and labor. Additional costs may apply if wiring repairs or software updates are needed. It's important to note that diagnosis time and labor rates at auto repair shops can vary, so it's advisable to check with local shops for a more accurate estimate.
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Code B3928 Information for Specific Makes
- B3928 Buick — Incorrect Environmental Identifier Received from Telematics Communication Interface Control Module
- B3928 Cadillac — Incorrect Environmental Identifier Received from Telematics Communication Interface Control Module
- B3928 Chevrolet — Incorrect Environmental Identifier Received from Telematics Communication Interface Control Module
- B3928 GMC — Incorrect Environmental Identifier Received from Telematics Communication Interface Control Module
Frequently Asked Questions about B3928 Code
1. What does the OBDII code B3928 mean?
The B3928 code indicates that the vehicle's telematics communication interface control module has received an incorrect environmental identifier, signaling a communication or configuration issue.
2. What are the common symptoms of code B3928?
Symptoms may include a malfunctioning telematics system, inoperative OnStar or similar services, error messages on the infotainment screen, or failure to establish a connection with telematics services.
3. What causes the B3928 code to appear?
Common causes include software mismatches, incorrect module programming, a failed telematics control module, or faulty wiring and connections in the telematics system.
4. How is the B3928 code diagnosed?
A technician will use a scan tool to read the code and check for communication issues, inspect the telematics control module, and verify proper software programming and wiring integrity.
5. Can a software update fix the B3928 code?
Yes, in many cases, updating or reprogramming the telematics module's software can resolve the issue if the code is triggered by a software mismatch.
6. Does the B3928 code affect vehicle performance?
This code typically does not impact basic vehicle performance but can affect telematics features like navigation, emergency services, or remote connectivity.
7. Can a weak or dead battery cause the B3928 code?
Yes, a weak or dead battery can cause module communication errors, potentially triggering this code if the telematics system fails to initialize properly.
8. Is the telematics module the only potential cause of the B3928 code?
No, other potential causes include wiring faults, network communication issues, or other control modules sending incorrect data.
9. How much does it cost to repair the B3928 code?
Repair costs vary depending on the issue but may range from $100 to $500 for diagnostics, software updates, or module replacement.
10. Can I clear the B3928 code without fixing the problem?
Clearing the code without addressing the root cause may result in the code returning shortly, as the underlying issue remains unresolved.
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