← Back to Search Severity: Medium

B0858

B0858: Door Locks Module Malfunction

Fix Cost
$150 - $500
Parts & Labor
Difficulty
3/5
Moderate
1-2 hours
DIY Possible?
❌ No
Pro recommended
Category
Body
System

📖 What Does B0858 Mean?

The B0858 code indicates a malfunction in the door locks module, which controls the operation of the door locks and windows. This can cause issues with locking and unlocking the doors, as well as problems with the automatic door lock/unlock feature.
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Symptoms

  • Door locks not functioning properly
  • automatic door lock/unlock feature not working
  • doors not locking/unlocking with key fob or door switch
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Common Causes

  • Faulty door locks module
  • wiring issues
  • faulty door lock actuators
  • faulty door lock switches
Fix Guide
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Possible Solutions

1. Disconnect the battery to reset the door locks module. 2. Check and repair any wiring issues. 3. Replace the door locks module if faulty. 4. Replace faulty door lock actuators or door lock switches.

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Common Questions About B0858

Q

Can I drive with code B0858?

A

You can drive for a short time, but should address code B0858 soon to avoid worsening the problem or failing an emissions test.

Q

How much does it cost to fix B0858?

A

The estimated repair cost for code B0858 is between $150 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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Need a Pro?

Complex codes like B0858 can be tricky. Don't risk it if you're unsure.

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Related Diagnostic Codes

Other codes that may appear with B0858

💡 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