📖 What Does B0904 Mean?
Symptoms
- • Airbag warning light on dashboard
- • unusual airbag deployment
- • or no airbag deployment in a crash
Common Causes
- • Faulty airbag sensor
- • wiring damage
- • airbag module failure
- • or ECU software issue
Possible Solutions
1. Check airbag sensor connections and wiring for damage. 2. Clear any error codes and test the airbag system. 3. Replace faulty airbag sensor or module if necessary. 4. Update ECU software if required.
Fixing this on your car?
Get a vehicle-specific repair guide with exact parts, oil specs, and torque settings for your make and model.
🚙 Get Vehicle-Specific Fix Guide
Select your vehicle to see a customized repair guide with exact parts and specifications:
❓ Common Questions About B0904
Can I drive with code B0904?
No, it is not recommended. Seeing code B0904 indicates a serious issue that could damage your engine or transmission if ignored. You should stop driving and have it inspected immediately.
How much does it cost to fix B0904?
The estimated repair cost for code B0904 is between $500 and $1500. This includes parts and labor for most makes and models.
Is this code easy to fix myself?
This repair is considered difficult. It may require specialized tools or significant disassembly. Professional help is recommended if you aren't an experienced DIYer.
Required Parts
Recommended Tools
Need a Pro?
Complex codes like B0904 can be tricky. Don't risk it if you're unsure.
Recommended Tool
Professional OBD2 Scanner
Read & clear codes, view live data, and reset service lights yourself.
View Best Sellers ↗Related Diagnostic Codes
Other codes that may appear with B0904
B0902: Immobilizer System Malfunction
B0903: Audio System Malfunction
B0905: Climate Control Fan Motor Malfunction
B0906: Door Locks Malfunction
💡 Why These Codes Are Related:
- • Similar Issues: Same root cause or component failure
- • Related Problems: Often occur together due to system interactions
- • Sequential Codes: Progressive failure stages or multiple sensors
- • Same System: Components within the same automotive system