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B0804

B0804: Seat Switch Circuit Malfunction

Fix Cost
$100 - $500
Parts & Labor
Difficulty
3/5
Moderate
1-2 hours
DIY Possible?
✅ Yes
Save money
Category
Body
System

📖 What Does B0804 Mean?

The B0804 code indicates a malfunction in the seat switch circuit, which controls the seat's position, lumbar support, or recline function.
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Symptoms

  • Seat position or function not working correctly
  • lumbar support or recline not adjusting
  • or seat warning light illuminated.
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Common Causes

  • Faulty seat switch
  • wiring issue
  • or seat control module failure.
Fix Guide
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Possible Solutions

1. Disconnect the battery to reset the system. 2. Check and clean the seat switch contacts. 3. Replace the seat switch if faulty. 4. Inspect and repair any damaged wiring. 5. Replace the seat control module if faulty.

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Common Questions About B0804

Q

Can I drive with code B0804?

A

You can drive for a short time, but should address code B0804 soon to avoid worsening the problem or failing an emissions test.

Q

How much does it cost to fix B0804?

A

The estimated repair cost for code B0804 is between $100 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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Complex codes like B0804 can be tricky. Don't risk it if you're unsure.

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Related Diagnostic Codes

Other codes that may appear with B0804

💡 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