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B0401

B0401: Climate Control Temperature Sensor Malfunction

Fix Cost
$50 - $200
Parts & Labor
Difficulty
3/5
Moderate
1-2 hours
DIY Possible?
✅ Yes
Save money
Category
Body
System

📖 What Does B0401 Mean?

The B0401 code indicates a malfunction in the climate control temperature sensor, which is responsible for monitoring the temperature of the air being blown into the vehicle. This malfunction can cause the climate control system to malfunction or not function at all.
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Symptoms

  • Inconsistent air temperature
  • poor air circulation
  • climate control system not functioning
  • unusual noises from the climate control system
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Common Causes

  • Faulty temperature sensor
  • wiring issue
  • electrical malfunction
  • software glitch
Fix Guide
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Possible Solutions

1. Disconnect the battery to reset the climate control system. 2. Check and clean the temperature sensor. 3. Replace the temperature sensor if faulty. 4. Check and repair any wiring issues. 5. Update the climate control system software if necessary.

Common Questions About B0401

Can I drive with code B0401?

You can drive for a short time, but should address code B0401 soon to avoid worsening the problem or failing an emissions test.

How much does it cost to fix code B0401?

The estimated repair cost for code B0401 is between $50 and $200. This includes parts and labor. Prices may vary based on your vehicle's make and model.

Is code B0401 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 Torx screwdriver
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Need a Pro?

Complex codes like B0401 can be tricky. Don't risk it if you're unsure.

Quick Stats

Severity Medium
DIY Friendly Yes
Est. Time 1-2 hours
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Related Diagnostic Codes

Other codes that may appear with B0401

💡 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