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Error code reference

Maytag Refrigerator Error Code SH

Shorted thermistor detected on the corresponding thermistor circuit (fresh food, freezer, or machine compartment).

Maytag codesMaytag refrigerator codes
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What the SH error code actually means

Your Maytag refrigerator has detected a problem with one of its temperature sensors, which is a small component that constantly monitors how cold the fridge is and reports that information to the control board. The sensor is sending an abnormal electrical signal that indicates it has failed or short-circuited, so the control board can no longer get accurate temperature readings. This error typically appears during a diagnostic or defrost cycle and usually means the sensor needs to be tested and most likely replaced.

Diagnostic procedure

The full SH procedure

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1
First diagnostic step
Use Service Test 141, 142, or 143 to identify which thermistor is shorted; check thermistor resistance values.
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Most common causes of SH

Ranked by how often they cause this code
  1. 1Failed thermistor with internal short
  2. 2Pinched or damaged thermistor wiring harness
  3. 3Moisture intrusion at thermistor connector
  4. 4Faulty main control board

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Questions people ask about SH

What does the SH error code mean on a Maytag refrigerator?
SH stands for shorted thermistor detected. The control board has measured resistance values from one of the refrigerator's thermistors that indicate a short circuit rather than a normal sensor reading. This code only appears during a service test or forced defrost mode, not during regular operation. The thermistor responsible needs to be identified and tested with a multimeter before replacing it.
Is it safe to keep using my Maytag refrigerator while the SH code is active?
The SH code only appears during diagnostic service test or forced defrost modes, so your refrigerator may continue to operate in normal mode. However, a shorted thermistor means the control board is working without accurate temperature data from that sensor, which can lead to improper defrost cycles, temperature swings, or compressor issues over time. Avoid storing highly perishable items until the sensor is replaced, and address the repair as soon as possible.
Can a wiring problem cause the SH code on a Maytag refrigerator instead of a bad thermistor?
Yes, a pinched, cut, or moisture-damaged wiring harness between the thermistor and the control board can create the same short-circuit condition that triggers SH. Before ordering a replacement thermistor, disconnect the thermistor connector and test resistance directly at the sensor itself rather than at the harness end. If the sensor reads correctly at the sensor but not at the board end, the harness or connector is the problem.
How do I fix the SH code on my Maytag refrigerator?
Start by checking the resistance of each thermistor in the refrigerator using a multimeter. A healthy thermistor will show a specific resistance value that changes with temperature; a shorted one will read near zero ohms. Disconnect each thermistor connector and test them individually to identify the faulty sensor. Once located, replace the shorted thermistor and recheck by running the service test again to confirm the code clears.
How much does it cost to repair a Maytag refrigerator SH error code?
A replacement thermistor typically costs between $10 and $40 depending on the specific part number for your model. If you are comfortable using a multimeter and accessing panels inside the refrigerator, this is a DIY-friendly repair. Professional labor to diagnose and replace the thermistor generally adds $100 to $200. If the root cause turns out to be the main control board rather than the sensor, parts cost can rise to $150 to $350 or more.

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