← Back to Search Severity: Medium

B0404

B0404: Seat Switch Circuit Malfunction

Fix Cost
$100 - $300
Parts & Labor
Difficulty
3/5
Moderate
1-2 hours
DIY Possible?
❌ No
Pro recommended
Category
Body
System

📖 What Does B0404 Mean?

The B0404 code indicates a malfunction in the seat switch circuit, which controls the seat's position, recline, or lumbar support. This code is usually triggered when the seat switch circuit is faulty or damaged.
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Symptoms

  • • Seat may not move or recline properly
  • • seat may be stuck
  • • or seat warning light is illuminated on the dashboard.
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Common Causes

  • • Faulty seat switch
  • • damaged or corroded wiring
  • • seat switch circuit board failure
  • • or faulty seat control module.
Fix Guide
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Possible Solutions

1. Disconnect the battery to reset the system. 2. Check and clean the seat switch and surrounding area for corrosion or debris. 3. Inspect the wiring and connectors for damage or corrosion. 4. Replace the faulty seat switch or circuit board if necessary. 5. Test the seat switch circuit to ensure proper function.

❓ Common Questions About B0404

Can I drive with code B0404?

You can drive for a short time, but should address code B0404 soon to avoid worsening the problem or failing an emissions test.

How much does it cost to fix code B0404?

The estimated repair cost for code B0404 is between $100 and $300. This includes parts and labor. Prices may vary based on your vehicle's make and model.

Is code B0404 easy to fix myself?

This repair is considered moderate. It may require specialized tools or significant disassembly. If you are not an experienced mechanic, professional help is recommended.

Required Parts

Tools

Multimeter Wire tester Torx screwdriver
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Need a Pro?

Complex codes like B0404 can be tricky. Don't risk it if you're unsure.

Quick Stats

Severity Medium
DIY Friendly No
Est. Time 1-2 hours
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Related Diagnostic Codes

Other codes that may appear with B0404

B0402 Sequential Code

B0402: Door Locks Malfunction

Medium
B0403 Sequential Code

B0403: Power Window Circuit Malfunction

Medium
B0405 Sequential Code

B0405: Exterior Lighting Malfunction

Medium
B0406 Sequential Code

B0406: Body System Security Malfunction

Medium

💡 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