B3978 2018 Chevrolet Silverado Code - Incorrect Environmental Identifier Received from Inflatable Restraint Sensing and Diagnostic 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 Inflatable Restraint Sensing and Diagnostic Module, Inflatable Restraint Sensing and Diagnostic Module harness is open or shorted, Inflatable Restraint Sensing and Diagnostic 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
- B3978 2018 Chevrolet Silverado indicates Incorrect Environmental Identifier Received from Inflatable Restraint Sensing and Diagnostic Module.
- Common causes
- Common causes include Faulty Inflatable Restraint Sensing and Diagnostic Module, Inflatable Restraint Sensing and Diagnostic Module harness is open or shorted, Inflatable Restraint Sensing and Diagnostic 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 B3978 2018 Chevrolet Silverado Description
What are the Possible Causes of the DTC B3978 2018 Chevrolet Silverado?
- Faulty Inflatable Restraint Sensing and Diagnostic Module
- Inflatable Restraint Sensing and Diagnostic Module harness is open or shorted
- Inflatable Restraint Sensing and Diagnostic Module circuit poor electrical connection
- Faulty Body Control Module (BCM)
How to Fix the DTC B3978 2018 Chevrolet Silverado?
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 B3978 2018 Chevrolet Silverado 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 B3978 2018 Chevrolet Silverado code?
Need more information on how to fix the B3978 2018 Chevrolet Silverado code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the B3978 2018 Chevrolet Silverado code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about B3978 2018 Chevrolet Silverado Code
1. What are the common symptoms of OBDII code B3978 in a 2018 Chevrolet Silverado?
The common symptoms include the airbag warning light illuminating on the dashboard and potential issues with the vehicle's airbag system.
2. What does the OBDII code B3978 "Incorrect Environmental Identifier Received from Inflatable Restraint Sensing and Diagnostic Module" mean for a 2018 Chevrolet Silverado?
This code indicates a communication error between the vehicle's airbag system and the onboard diagnostic system.
3. What are the possible causes of OBDII code B3978 in a 2018 Chevrolet Silverado?
Possible causes include a faulty inflatable restraint sensing and diagnostic module, wiring issues, or a malfunction in the airbag system components.
4. How serious is OBDII code B3978 in a 2018 Chevrolet Silverado?
This code should be taken seriously as it pertains to the vehicle's airbag system, which is a critical safety feature. It is recommended to address this issue promptly.
5. Can I continue driving my 2018 Chevrolet Silverado with OBDII code B3978 present?
It is not advisable to continue driving the vehicle with this code active, as it may indicate a potential problem with the airbag system that could affect its proper functioning in the event of an accident.
6. How can OBDII code B3978 in a 2018 Chevrolet Silverado be repaired?
To repair this code, it is recommended to have a professional mechanic diagnose the specific cause, which may involve replacing the inflatable restraint sensing and diagnostic module or addressing wiring issues.
7. Is it possible to reset OBDII code B3978 in a 2018 Chevrolet Silverado by disconnecting the battery?
While disconnecting the battery may reset the code temporarily, it is important to address the underlying issue causing the code to prevent it from reoccurring. Professional diagnosis and repair are recommended.
8. Are there any DIY tips for troubleshooting OBDII code B3978 in a 2018 Chevrolet Silverado?
DIY troubleshooting for this code is limited, as it involves specialized equipment and knowledge of airbag systems. It is best to consult a qualified mechanic for proper diagnosis and repair.
9. How much does it typically cost to fix OBDII code B3978 in a 2018 Chevrolet Silverado?
The cost of fixing this code can vary depending on the specific cause and the labor rates in your area. It is advisable to get a few quotes from reputable repair shops to determine the cost.
10. Can OBDII code B3978 in a 2018 Chevrolet Silverado cause the airbags to deploy unexpectedly?
While it is uncommon for this code to cause airbags to deploy unexpectedly, it is essential to address the issue promptly to ensure the airbag system functions correctly in the event of a collision.
Discuss the causes and fixes for B3978 2018 Chevrolet Silverado OBDII Code
Code B3978 2018 Chevrolet Silverado 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.
