Whirlpool Refrigerator Error Code CO
Last updated: January 5, 2026 MEDIUM
⚠️ Safety Warning
- Unplug the appliance before attempting any repairs
- Never attempt repairs while the appliance is energized
- If you're unsure, contact a certified Whirlpool technician
- Keep children and pets away during troubleshooting
🔧 Tools You May Need
- Multimeter
- Screwdriver set
- Work gloves
- Thermometer
- Level
- Condenser brush
What Does Error Code CO Mean?
The CO error on Whirlpool refrigerators signals evaporator fan problems. This diagnostic code helps prevent further damage.
Common Causes
- power failure
- power outage
- condenser coils
- compressor
How to Fix Error Code CO
Step 1: Reset Your Refrigerator
- Unplug the refrigerator from the power outlet
- Wait 2-3 minutes for the capacitors to discharge
- Plug the appliance back in
- Check if the error code has cleared
Diagnostic Checks for Refrigerator Error CO
| Diagnostic Check | Expected Result | If Failed |
|---|---|---|
| Check evaporator fan operation | Fan runs when door is closed | Replace evaporator fan motor |
| Inspect condenser coils | Coils clean, unobstructed airflow | Vacuum coils, ensure 2" clearance |
| Test defrost heater | Continuity when tested with multimeter | Replace defrost heater |
| Check door seals/gaskets | Seals tight, no gaps (dollar bill test) | Replace door gasket |
| Verify compressor operation | Compressor runs, gets warm to touch | Check start relay/overload |
💡 Pro Tips from ErrorCodeHub
Fan Motor First: If your fridge isn't cold but the freezer is fine, the evaporator fan motor is likely failed. It's usually a $30 part behind the freezer back panel.
Frequently Asked Questions
What does Whirlpool error code CO mean?
The CO error on Whirlpool refrigerators signals evaporator fan problems. This diagnostic code helps prevent further damage.
Can I fix error code CO myself?
Many CO errors can be fixed with basic troubleshooting. Start with a reset, then check common causes.
How much does it cost to fix error CO?
Repair costs typically range from $50-$300 depending on the cause.
Should I call a technician for error CO?
If basic troubleshooting doesn't work, or you're uncomfortable with repairs, contact a certified technician.
More Whirlpool Refrigerator Error Codes
When to Call a Professional
Consider contacting a certified Whirlpool technician if:
- The error persists after troubleshooting
- You're not comfortable with DIY repairs
- The repair involves electrical or gas components
- Your appliance is still under warranty
Find a technician: Call Whirlpool support or search for certified repair services in your area.