← Back to Search Severity: Medium

B0305

B0305: Climate Control Malfunction

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

📖 What Does B0305 Mean?

This code indicates a problem with the climate control system, such as a faulty temperature sensor, a clogged air duct, or a malfunctioning blower motor.
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Symptoms

  • Inconsistent air flow
  • uneven heating or cooling
  • unusual noises
  • or failure to blow air
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Common Causes

  • Faulty temperature sensor
  • clogged air duct
  • malfunctioning blower motor
  • faulty climate control module
  • or wiring issue
Fix Guide
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Possible Solutions

1. Check and clean the air ducts; 2. Replace the faulty temperature sensor; 3. Inspect and replace the blower motor if necessary; 4. Test and replace the climate control module if necessary; 5. Check and repair any wiring issues

Common Questions About B0305

Can I drive with code B0305?

You can drive for a short time, but should address code B0305 soon to avoid worsening the problem or failing an emissions test.

How much does it cost to fix code B0305?

The estimated repair cost for code B0305 is between $100 and $500. This includes parts and labor. Prices may vary based on your vehicle's make and model.

Is code B0305 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.

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Need a Pro?

Complex codes like B0305 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 B0305

💡 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