B3978 2017 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 2017 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 2017 Chevrolet Silverado Description
What are the Possible Causes of the DTC B3978 2017 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 2017 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 2017 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.
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Frequently Asked Questions about B3978 2017 Chevrolet Silverado Code
1. What are the common symptoms of OBDII code B3978 in a 2017 Chevrolet Silverado?
- Common symptoms include the airbag warning light staying illuminated on the dashboard and potential non-deployment of the airbags during a collision.
2. What does the OBDII code B3978 on a 2017 Chevrolet Silverado mean?
- The code indicates that the Inflatable Restraint Sensing and Diagnostic Module (SDM) has detected an incorrect environmental identifier.
3. What are the possible causes of OBDII code B3978 in a 2017 Chevrolet Silverado?
- Causes can include a faulty SDM, wiring issues, poor connections, or environmental factors affecting the module's operation.
4. How can I diagnose OBDII code B3978 in my 2017 Chevrolet Silverado?
- Diagnosis typically involves using a diagnostic scanner to retrieve the code, checking the SDM for proper connections, inspecting related wiring, and verifying environmental conditions.
5. Is it safe to continue driving with OBDII code B3978 present in a 2017 Chevrolet Silverado?
- It is not recommended to drive with this code active, as it may affect the proper functioning of the airbag system in the event of an accident.
6. Can I reset OBDII code B3978 in a 2017 Chevrolet Silverado myself?
- While you can clear the code with a diagnostic scanner, it is essential to address the underlying issue causing the code to prevent its recurrence.
7. How much does it typically cost to repair OBDII code B3978 in a 2017 Chevrolet Silverado?
- The cost of repair can vary depending on the specific cause of the code, but it may involve replacing the SDM, repairing wiring, or addressing connection issues.
8. Are there any DIY tips for fixing OBDII code B3978 in a 2017 Chevrolet Silverado?
- DIY tips may include checking for loose connections, inspecting wiring for damage, and ensuring the SDM is securely in place. However, complex repairs may require professional assistance.
9. Can extreme temperatures or humidity trigger OBDII code B3978 in a 2017 Chevrolet Silverado?
- Yes, environmental factors like extreme temperatures or humidity can potentially impact the SDM's operation and lead to the detection of an incorrect environmental identifier.
10. How long does it typically take to repair OBDII code B3978 in a 2017 Chevrolet Silverado?
- The repair duration can vary based on the specific cause of the code and the complexity of the fix. It could range from a quick connection adjustment to a more involved SDM replacement, potentially taking a few hours to complete.
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