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Kenmore Refrigerator Er CO Error Code
Boards aren't communicating on Kenmore refrigerators.
KenmoreAll Kenmore refrigerator codes
The main power board and the display board have stopped talking to each other. A loose or damaged harness between them, or a fault on either board, is behind it.
Compatible models
Kenmore and Kenmore Elite bottom-freezer refrigerators with a 795 model prefix, according to Sears PartsDirect.
Also shown as
106-prefix models show CF for the same kind of fault, and 253 series French-door models show SY CE or SY CF.
Difficulty
Try the basic checks, but the usual fix is a technician's job.
Not sure you are reading the code right? See how to read Kenmore refrigerator codes.
How to fix Kenmore Er CO
Cut the power and restore it
Switch off the refrigerator's breaker or unplug it for about 5 minutes, then turn it back on. A glitch after a surge or outage can clear this way. A damaged harness or board won't.
Watch the temperatures
Put a thermometer in each compartment. Food in the fresh-food side needs to stay at or below 40°F (4°C); move it to coolers if it climbs past that.
When to call a technician
Harness and board checks are technician work. Both boards are pricey, so have the fault traced to the right one before anything gets ordered.
Parts linked to Er CO
These are the parts most often behind this code. Tap one to see what it does and the signs it is failing.
Order parts by your full model number so they fit.
Frequently asked questions
Which Kenmore models show the Er CO code?
Kenmore and Kenmore Elite bottom-freezer refrigerators with a 795 model prefix, according to Sears PartsDirect.
Can I fix Kenmore Er CO myself?
Only the basic checks. You can safely try the steps above, but Er CO usually points to a part or fault that needs a technician.
Other Kenmore refrigerator codes
- Er FFFreezer evaporator fan fault
- Er IFIce compartment fan has failed
- Er CFCondenser fan motor problem
- Er FS / Er rSFreezer or refrigerator temperature sensor fault
- F dH / r dHDefrost didn't warm the coil enough
- F dS / r dSDefrost sensor fault
- Er IS / Er ItIce maker sensor or ice maker fault
- Er gFWater flow meter error
- dAir damper is stuck
- CCompartment temperature sensor failure
- CFControl board and user interface lost contact
- OP / SHSensor circuit reads open or shorted
- SY EFFreezer fan circuit has failed
- SY CE / SY CFControl board and door interface out of contact
- C1Sealed refrigerant system failure
- F3 / r3Defrost heater failure
- dr / dFDoor open over an hour or bad door switch
- ESDispenser failure, often a stuck button
- d2Forced defrost is running
Last reviewed 2026-10-21. Codes and steps can vary by model; check your owner's manual.