AutoCodes.com | All About OBDII Engine Codes
AutoCodes - Chevrolet - B3984 Chevrolet

B3984 Chevrolet Code - Device 1 Environment Identifier Not Programmable

- Code Popularity: 734 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
Table of contents
Share on Facebook   Share on Twitter   Share on Linkedin

What are the Possible Causes of the DTC B3984 Chevrolet?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Faulty control module that set the Diagnostic Trouble Code (DTC)
⚠ Does your Chevrolet have Safety Recalls? → Check here

How to Fix the DTC B3984 Chevrolet?

Review the 'Possible Causes' mentioned above and visually examine the corresponding wiring harness and connectors. Ensure to check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.

Search for B3984 Chevrolet Questions and Answers: Search here →

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B3984 Chevrolet code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.

What are Code Possible Symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

Code B3984 Chevrolet Description

When certain modules are programmed and configured during installation, the module learns a specific environment identifier which is unique to the vehicle. The environment identifier is used to prevent the swapping modules between vehicles. The Body Control Module (BCM) is the keeper of the environment identifier. The instrument cluster, electronic brake control module, HVAC control module, inflatable restraint sensing and diagnostic module, Engine Control Module (ECM), and steering column lock module (if equipped) each learn the environment identifier during their configuration process. During vehicle operation, the BCM sends the immobilizer identifier as a challenge and each module responds to the challenge by sending the environment identifier back to the BCM. If the BCM sends an incorrect immobilizer identifier or a specific number of incorrect environment identifiers are received, vehicle starting is disabled. The Diagnostic Trouble Code (DTC) sets when an incorrect environment identifier is programmed, or no environment identifier is programmed.

OBDII Code B3984 Chevrolet - Device 1 Environment Identifier Not Programmable - AutoCodes.com
B3984 Chevrolet Code - Device 1 Environment Identifier Not Programmable

Need More Information on the Code?

Need more information on how to fix the B3984 Chevrolet code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B3984 Chevrolet code diagnosed by a professional: Find a repair shop in your area

Code B3984 Chevrolet comments

Help us improve AutoCodes.com. Leave a comment below or tell us if the information above helps you fix the code. What are the symptoms on your vehicle for the B3984 Chevrolet code? Have you replaced any parts?
Any information is appreciated. Thanks