Kenmore Refrigerator Error Code Er CO: Meaning and Fix
Reading the refrigerator display
On a refrigerator the code shows on the control panel or dispenser display. Some models flash a letter or alternate two characters; hold the code in view and note both. Check the model-number prefix first: the same Kenmore code can mean different things depending on the manufacturer.
Kenmore is a private label, and the factory that built your unit decides which fault codes it shows. The first digits of a Kenmore model number (110, 417, 665, 795, 796 and so on) tell you whether Whirlpool, LG, Electrolux or Frigidaire made it. Check the model label on your unit before using any chart.
What causes Er CO
- A failed relay, triac or processor on the main control board
- A loose ribbon cable or connector between the user interface and the main board
- Loose communication cable
- Moisture, a power surge or corrosion damage on the electronics
How to fix it
- Disconnect power for at least five minutes to let the electronics reset, then restore power and see whether the code clears.
- Open the electronics enclosure and look for burn marks, swollen capacitors, water traces or loose connectors.
- Reseat the display harness.
- Reseat every connector and ribbon cable on the control and display boards.
- Check the supply voltage at the outlet to rule out a brown-out or bad ground.
- If the code returns straight away, replace the control module using the exact part number from the model/serial tag.
Parts you may need
| Part | Part no. | Buy |
|---|---|---|
| Refrigerator Electronic Control Board | WPW10503278 | Find part |
Part numbers are OEM references; confirm fit by your model number before ordering. Some links are affiliate links; we may earn a commission at no extra cost to you.
Questions
What does error Er CO mean on a Kenmore refrigerator?
The main board and display board cannot talk to each other. Kenmore sells units built by several manufacturers, so the code table that applies depends on who made your model; use the model number to confirm.
Can I keep using my refrigerator while Er CO is showing?
Possibly, if the machine still starts, but a failing board can misbehave at random, so plan a repair.
How do I clear Er CO, and can I fix it myself?
Cancel the program, switch the appliance off and leave it unplugged (or the breaker off) for about five minutes, then restart. The code only stays cleared if the underlying problem is fixed, so work through the steps above. Parts here involve electronics, heating or sealed components, so consider a qualified technician if the basic checks do not clear it.
Other Kenmore refrigerator codes
Sources
Part numbers are OEM references; confirm fit by your model number before ordering. Meanings compiled from manufacturer and parts-retailer documentation; see sources below. Unplug the appliance before opening it.
Applies to models including Kenmore Elite 795 series (LG-built), Kenmore 106 series (Whirlpool-built), Kenmore 253 series (Frigidaire-built).