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Error code reference

Kenmore Refrigerator Error Code C1

Cycle error

Kenmore codesKenmore refrigerator codes
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What the C1 error code actually means

Your Kenmore refrigerator has detected that its compressor has been running nonstop for more than 3 hours without getting the inside cold enough, which usually points to a refrigerant leak. Think of refrigerant as the lifeblood of your fridge's cooling system, and if it leaks out, the compressor just keeps running without being able to do its job. This is not a problem that goes away on its own and typically requires a certified appliance or HVAC technician to diagnose and repair.

Diagnostic procedure

The full C1 procedure

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First diagnostic step
Check refrigerant leakage.
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Most common causes of C1

Ranked by how often they cause this code
  1. 1Refrigerant Leak
  2. 2Dirty or Blocked Condenser Coils
  3. 3Weak or Failing Compressor
  4. 4Faulty FD or RD Temperature Sensor
  5. 5Restricted or Faulty Expansion Device

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Questions people ask about C1

What does C1 mean on a Kenmore refrigerator?
The C1 code means the refrigerator has detected a cycle error where the compressor ran continuously for more than 3 hours without the freezer door or refrigerator door sensor temperature dropping below 23°F (-5°C). This condition points to a problem with the sealed cooling system, most commonly a refrigerant leak. The compressor keeps running because it cannot reach the target temperature, which triggers the error code on the control board.
Is it safe to keep using my refrigerator while it shows a C1 error?
A refrigerator displaying C1 is not cooling properly, which means food safety is a real concern since temperatures inside the cabinet may be too high to safely store perishables. Running the compressor continuously for extended periods can also accelerate wear and lead to compressor failure, increasing repair costs. It is best to transfer perishable food to a working unit and have the refrigerator serviced promptly.
Will resetting the refrigerator clear the C1 error code?
Resetting the refrigerator by unplugging it for a few minutes may temporarily clear the C1 code from the display, but the error will return if the underlying cooling system problem has not been resolved. Because the code is triggered by a specific runtime and temperature condition, the control board will detect the same issue during the next compressor cycle if nothing has been repaired. A reset is useful for confirming whether the fault is persistent, but it is not a fix.
Can I fix a C1 error on my Kenmore refrigerator myself?
Some basic checks, such as cleaning condenser coils or inspecting sensor wiring, can be done by a knowledgeable DIYer. However, if the root cause is a refrigerant leak or a failing compressor, those repairs require certified technicians with specialized equipment, as handling refrigerants is regulated by federal law. Attempting sealed system repairs without proper training and tools can void warranties and create safety hazards.
How much does it cost to repair a C1 error on a Kenmore refrigerator?
Repair costs vary widely depending on the root cause. Cleaning condenser coils is inexpensive, typically in the range of $50 to $150 for a service call. Refrigerant leak repairs including locating the leak, repairing it, and recharging the system can range from $200 to $500 or more. Compressor replacement is the most expensive scenario, often falling between $400 and $800 or higher depending on parts availability and labor rates in your area.

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