Samsung C4 Error Code

Duct thermostat error — overheating detected

What Causes the C4 Error?

Clogged dryer vent
Failed thermistor
Blocked lint filter

How to Fix It — Step by Step

Step 1: Clean the lint filter thoroughly
Step 2: Check and clean the entire dryer vent duct to the exterior
Step 3: If vent is clear, test and replace the thermistor

Difficulty: Medium

🔧 Part Needed: Dryer Thermistor

Source the exact replacement part yourself and skip the technician markup.

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⏰ This error won't fix itself. The part costs less than a diagnostic visit.

Don't wait — a small part failure can cause cascading damage. Order the Dryer Thermistor and get your Samsung dryer running again today.

Frequently Asked Questions

What does C4 mean on a Samsung dryer?

Duct thermostat error — overheating detected

Can I fix the C4 error on my Samsung dryer myself?

Yes. This repair is rated "Medium" and the part you need is a Dryer Thermistor. Most homeowners can complete this fix with basic tools. Always disconnect power before starting any repair.

How much does it cost to fix the C4 error on a Samsung dryer?

A service call alone costs $100–200. The Dryer Thermistor is typically much less when you source it yourself — far cheaper than hiring a pro. You'll save the most by doing the swap yourself.