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B0304

B0304: Airbag System Sensor Circuit Malfunction

Fix Cost
$200 - $500
Parts & Labor
Difficulty
3/5
Moderate
1-2 hours
DIY Possible?
❌ No
Pro recommended
Category
Body
System

📖 What Does B0304 Mean?

The airbag system sensor circuit is malfunctioning, preventing the airbag from deploying properly in the event of an accident.
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Symptoms

  • Airbag warning light on dashboard
  • airbag not deploying in a crash
  • unusual sounds or vibrations from airbag system
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Common Causes

  • Faulty airbag sensor
  • wiring damage
  • or electrical connector issues
Fix Guide
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Possible Solutions

1. Disconnect battery to prevent accidental deployment. 2. Locate faulty sensor and replace it with a new one. 3. Inspect and repair or replace wiring and electrical connectors as needed. 4. Reconnect battery and test airbag system.

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Common Questions About B0304

Q

Can I drive with code B0304?

A

No, it is not recommended. Seeing code B0304 indicates a serious issue that could damage your engine or transmission if ignored. You should stop driving and have it inspected immediately.

Q

How much does it cost to fix B0304?

A

The estimated repair cost for code B0304 is between $200 and $500. This includes parts and labor for most makes and models.

Q

Is this code easy to fix myself?

A

This repair is considered moderate. It may require specialized tools or significant disassembly. Professional help is recommended if you aren't an experienced DIYer.

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Related Diagnostic Codes

Other codes that may appear with B0304

💡 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