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KitchenAid·Refrigeratorhigh severity
KitchenAid Refrigerator Error Code C1
Freezer sensor open
Common Causes
- 1Freezer thermistor failure
- 2Wiring damage
- 3Connector fault
Step-by-Step Troubleshooting
- 1
Locate the freezer thermistor — typically clipped to the evaporator cover or freezer wall
- 2
Disconnect and measure resistance: approximately 16,000 ohms at 32F (0C)
- 3
An open circuit (infinite/OL) reading confirms sensor failure
- 4
Check the wiring harness for damage where it passes through the cabinet wall
Pro Diagnostic Tip
An open freezer thermistor causes the compressor to run continuously — the board defaults to maximum cooling when it loses sensor feedback. On KitchenAid models, this leads to frost buildup on the evaporator and ice-cold fresh food section.
You Might Also Notice
- •Freezer runs constantly without cycling off
- •Frost buildup on evaporator coils
- •Freezer colder than set point
- •Fresh food section too cold
Parts, Cost & Difficulty
Repair Difficulty
Moderate — Some Experience NeededEstimated Repair Cost
$75–$175
Parts + labor. Free diagnosis with repair.
Parts That May Need Replacement
WPW10384183 Freezer Thermistor Sensor
Do You Have the Right Tools?
Refrigerant gauges ($200+), vacuum pump ($250), leak detector ($150), and EPA-certified recovery equipment. Our technician arrives with $15K+ in professional tools — your diagnostic is free.
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Refrigerant (R-134a/R-600a) requires EPA certification to handle. Improper discharge is a federal violation and health hazard. Our techs are licensed and insured — let them handle the risk.
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Get Professional Help Now
Error code C1 is a high-severity issue that can cause further damage to your refrigerator if left unresolved. A licensed technician can diagnose and fix it the same day.
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Frequently Asked Questions
What does KitchenAid error code C1 mean?
KitchenAid error code C1 indicates: Freezer sensor open. This is a high-severity issue affecting your refrigerator.
How do I fix KitchenAid error code C1?
Locate the freezer thermistor — typically clipped to the evaporator cover or freezer wall Then, Disconnect and measure resistance: approximately 16,000 ohms at 32F (0C) Then, An open circuit (infinite/OL) reading confirms sensor failure There are 1 more steps — see the full troubleshooting guide above. This repair typically requires professional tools and expertise.
How do I know if my refrigerator has error C1?
Besides the error code on the display, common signs include: Freezer runs constantly without cycling off; Frost buildup on evaporator coils; Freezer colder than set point. If you notice any of these symptoms, check your refrigerator's display panel for error code C1.
How much does it cost to fix KitchenAid C1?
Repair costs for KitchenAid C1 typically range from $75 to $175 depending on the specific cause and parts needed. EasyBear offers free diagnosis when you proceed with the repair. Call (415) 795-7300 for a same-day appointment.