B3981 2017 Chevrolet Silverado Code - Incorrect Environmental Identifier Received from Electronic Brake Control Module
Quick Answer
The B3981 code on a 2017 Chevrolet Silverado indicates that the Body Control Module (BCM) has received an incorrect environmental identifier from the Electronic Brake Control Module (EBCM). Common causes include Faulty wiring or connections between the BCM and EBCM, Corrosion or damage to the communication lines between the modules, Defective EBCM or BCM. 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
- B3981 2017 Chevrolet Silverado indicates Incorrect Environmental Identifier Received from Electronic Brake Control Module.
- Common causes
- Common causes include Faulty wiring or connections between the BCM and EBCM, Corrosion or damage to the communication lines between the modules, Defective EBCM or BCM.
- 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 B3981 2017 Chevrolet Silverado Description
The B3981 code on a 2017 Chevrolet Silverado indicates that the Body Control Module (BCM) has received an incorrect environmental identifier from the Electronic Brake Control Module (EBCM). This means that there is a communication error between the two modules, which can lead to various issues in the vehicle's braking system. The EBCM is responsible for controlling the vehicle's anti-lock braking system (ABS) and traction control system, so any communication errors can affect the performance of these systems.
Common Causes of B3981 2017 Chevrolet Silverado
- Faulty wiring or connections between the BCM and EBCM
- Corrosion or damage to the communication lines between the modules
- Defective EBCM or BCM
- Software issues or programming errors in the modules
- Environmental factors affecting the communication between the modules
Symptoms of B3981 2017 Chevrolet Silverado
- ABS warning light illuminated on the dashboard
- Traction control warning light activated
- Decreased braking performance
- Unusual noises coming from the braking system
- Vehicle stability issues during braking
How to Fix B3981 2017 Chevrolet Silverado
- Perform a thorough inspection of the wiring and connections between the BCM and EBCM.
- Check for any corrosion or damage to the communication lines and repair or replace as needed.
- Test the EBCM and BCM for any faults or defects and replace if necessary.
- Update the software in the modules to the latest version to address any programming errors.
- Clear the diagnostic trouble codes and perform a test drive to ensure the issue has been resolved.
Cost to Fix B3981 2017 Chevrolet Silverado
The typical repair costs for addressing the B3981 code on a 2017 Chevrolet Silverado can range from $200 to $500, depending on the specific cause of the issue and the cost of parts and labor. It is important to note that diagnosis time and labor rates at auto repair shops can vary, with hourly rates typically falling between $80 and $150. Rates may be higher at dealerships or in metropolitan areas, while independent shops may offer lower prices. It is recommended to obtain quotes from local repair shops for a more accurate estimate.
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Frequently Asked Questions about B3981 2017 Chevrolet Silverado Code
1. What does the OBDII code B3981 mean on a 2017 Chevrolet Silverado?
The B3981 code indicates that the Electronic Brake Control Module (EBCM) has received an incorrect environmental identifier, typically due to a communication error or mismatch in vehicle configuration data.
2. What are the common symptoms of code B3981 in a 2017 Chevrolet Silverado?
Symptoms may include the illumination of the check engine light, ABS light, or traction control light, along with possible braking system issues or limited functionality of stability control features.
3. What causes the B3981 code to appear?
The most common causes include software or programming errors in the EBCM, a mismatch in module configuration, faulty wiring or connections, or a defective EBCM.
4. Can driving with the B3981 code cause safety issues?
Yes, since it may affect the ABS and traction control systems, driving with this code could compromise vehicle safety, especially in adverse road conditions.
5. How do you diagnose the B3981 code on a 2017 Chevrolet Silverado?
Diagnosis involves scanning the vehicle with an advanced scan tool, checking for related codes, verifying module configurations, inspecting wiring and connections, and ensuring the EBCM software is up to date.
6. Is a software update required to fix the B3981 code?
In some cases, a software update or reprogramming of the EBCM may resolve the issue, especially if there are known updates related to this code.
7. Can a faulty Electronic Brake Control Module cause the B3981 code?
Yes, a malfunctioning EBCM can lead to this code, especially if it fails to correctly process environmental identifier data.
8. How much does it cost to repair the B3981 code on a 2017 Chevrolet Silverado?
Repair costs vary depending on the cause, but reprogramming or software updates typically cost $100-$200, while EBCM replacement could range from $500 to $1,500.
9. Can a loose or damaged wiring connection trigger the B3981 code?
Yes, damaged, corroded, or loose wiring between the EBCM and other modules can disrupt communication and cause this code.
10. How can I prevent the B3981 code from coming back after repairs?
Ensure all modules are correctly programmed, wiring is properly connected and maintained, and software is updated to the latest version recommended by Chevrolet.
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