B3924
Incorrect Environmental Identifier Received from Inflatable Restraint Sensing and Diagnostic Module
B3924 is an OBD-II diagnostic trouble code meaning: Incorrect Environmental Identifier Received from Inflatable Restraint Sensing and Diagnostic Module. Common causes: damage to the harness for the passive restraint system, sdm module failure. Estimated repair cost: $56–278.
Symptoms
- Airbag light is on
- Restraint systems can be deactivated
- The error may appear after an accident or repair.
Causes
- Damage to the harness for the passive restraint system
- SDM module failure
- Software error in SDM or ECU
- Incompatibility of components after repair
- Problems with module power supply
How to Fix
- Check diagnostic codes in other modules
- Inspect the restraint system wiring harness for damage.
- Check the power and ground of the SDM module
- Read SDM module ID and compare with expected value
- If necessary, reflash or replace the SDM module
- Clear error codes and perform system test
Related codes
Error B3924 by Vehicle Brand
FAQ
What does the B3924 code mean?
B3924 is an OBD-II diagnostic trouble code that indicates: Incorrect Environmental Identifier Received from Inflatable Restraint Sensing and Diagnostic Module
What causes a B3924 error code?
The most common causes of B3924 include: Damage to the harness for the passive restraint system; SDM module failure; Software error in SDM or ECU; Incompatibility of components after repair.
How do I fix a B3924 diagnostic trouble code?
To fix B3924: Check diagnostic codes in other modules. Inspect the restraint system wiring harness for damage.. Check the power and ground of the SDM module. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with B3924?
Do not drive — repair immediately
How much does it cost to fix B3924?
The estimated repair cost for B3924 is $56–278. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat