B3928 Cadillac Code - Incorrect Environmental Identifier Received from Telematics Communication Interface Control Module
Quick Answer
When certain modules are programmed and configured during installation, the module learns a specific environment identifier which is unique to the vehicle. Common causes include Faulty Telematics Communication Interface Control Module, Telematics Communication Interface Control Module harness is open or shorted, Telematics Communication Interface 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
- B3928 Cadillac indicates Incorrect Environmental Identifier Received from Telematics Communication Interface Control Module.
- Common causes
- Common causes include Faulty Telematics Communication Interface Control Module, Telematics Communication Interface Control Module harness is open or shorted, Telematics Communication Interface 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.
Code B3928 Cadillac Description
The Diagnostic Trouble Code (DTC) sets when the control module's environment identifier does not match the environment identifier stored by the BCM.
What are the Possible Causes of the DTC B3928 Cadillac?
- Faulty Telematics Communication Interface Control Module
- Telematics Communication Interface Control Module harness is open or shorted
- Telematics Communication Interface Control Module circuit poor electrical connection
- Faulty Body Control Module (BCM)
How to Fix the DTC B3928 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 B3928 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.
Need more information about the B3928 Cadillac code?
Need more information on how to fix the B3928 Cadillac code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the B3928 Cadillac code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about B3928 Cadillac Code
1. What are common symptoms of OBDII code B3928 in a Cadillac?
The common symptoms include issues with the vehicle's telematics system, such as loss of communication with the control module, malfunction indicator light (MIL) illumination, and potential failure of other related systems.
2. What can cause the OBDII code B3928 in a Cadillac?
This code is typically triggered when the Telematics Communication Interface Control Module in the vehicle receives an incorrect environmental identifier, which can result from wiring issues, module failures, or software glitches.
3. How can I diagnose the OBDII code B3928 in my Cadillac?
Diagnosing this code involves using an OBDII scanner to retrieve the specific code, checking the wiring and connections to the telematics control module, and testing the module itself for functionality.
4. What should I do if my Cadillac shows the OBDII code B3928?
If your Cadillac displays this code, it is recommended to consult with a qualified mechanic or dealership for a proper diagnosis and repair. Ignoring the issue can lead to further problems with the vehicle's communication systems.
5. Can I repair the OBDII code B3928 in my Cadillac myself?
While some DIY enthusiasts may attempt to address wiring issues or check connections, fixing this code often requires specialized tools and knowledge. It is advisable to seek professional help to ensure proper diagnosis and repair.
6. Will the OBDII code B3928 affect my Cadillac's performance?
In most cases, this code may not directly impact the vehicle's performance but could lead to issues with the telematics system, affecting features like GPS navigation, emergency services, and remote diagnostics.
7. How much does it cost to repair the OBDII code B3928 in a Cadillac?
The cost of repairing this code can vary depending on the underlying cause, parts needed, and labor rates. It is recommended to obtain estimates from reputable repair shops or dealerships.
8. Can the OBDII code B3928 be a recurring issue in my Cadillac?
If the root cause of the code is not properly addressed during repairs, it is possible for the issue to reoccur. Ensure that the diagnosis is thorough and the recommended repairs are completed correctly.
9. Is it safe to continue driving my Cadillac with the OBDII code B3928 present?
While the vehicle may still be operable with this code displayed, it is essential to address the issue promptly to prevent potential failures in the telematics system. Continued driving without addressing the problem could lead to further complications.
10. How long does it take to repair the OBDII code B3928 in a Cadillac?
The repair time for this code can vary depending on the complexity of the issue and the availability of parts. Some repairs may be completed in a few hours, while others could take longer if extensive troubleshooting is required.
Discuss the causes and fixes for B3928 Cadillac OBDII Code
Code B3928 Cadillac comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
