Error code · Microwave

Samsung Microwave Code C-70: Steam Sensor

C-70, C-71, and C-72 appear on Samsung microwaves and are listed as an error with the steam sensor. That sensor lets the microwave judge how much steam a food is giving off. When it does not…

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Code: C-70 / C-71 / C-72
Appliance: Microwave
Brand: Samsung
Warranty: 30-day workmanship

What C-70 / C-71 / C-72 means

C-70, C-71, and C-72 appear on Samsung microwaves and are listed as an error with the steam sensor. That sensor lets the microwave judge how much steam a food is giving off. When it does not read properly, the microwave stops and shows the code. The listing is not tied to one model, so we name the product type only. You will see C-70, C-71, or C-72 on the display.

Common causes of C-70 / C-71 / C-72

The steam sensor reading outside its normal range
Moisture or steam that has reached the sensor connection
A loose connection between the sensor and the control

✓ One safe check you can try

1. Cut power by unplugging the microwave or turning its breaker off. 2. Steam and spills count as moisture here, so let the cavity dry if it is wet. 3. Otherwise count out 60 seconds, then switch the power on. 4. If a C-7 code shows again, leave the microwave off and request service.

! Why to stop there

Steam is part of normal cooking, so a sensor code that returns after use points to the sensor or its connection.
We test how the sensor reads steam and check the wiring to the control.
We quote in writing first, and our repair carries a 30-day workmanship warranty.

Opening a panel yourself does not automatically cancel a manufacturer warranty, but it can cause accidental damage, and some manufacturers set their own service conditions. Check your warranty terms, or ask us, before deciding.

→Same appliance

Other Microwave codes

E-61Samsung Microwave Code E-61: Humidity Sensor Open E-62Samsung Microwave Code E-62: Humidity Sensor Shorted E-63Samsung Microwave Code E-63: Humidity Sensor Timed Out E-71Samsung Microwave Code E-71: Steam Sensor Open E-72Samsung Microwave Code E-72: Steam Sensor Shorted E-81Samsung Microwave Code E-81: Control Link Open E-82Samsung Microwave Code E-82: Control Link Shorted E-83Samsung Microwave Code E-83: Control Link Unreliable

C-70 / C-71 / C-72C-70 / C-71 / C-72 questions

What kind of error is C-70?

It is listed as an error with the steam sensor. The sensor that detects steam from food is not reading properly, so the microwave stopped.

Are C-71 and C-72 the same?

They are in the same steam sensor group, and the first steps are identical: power off, let any moisture dry, wait 60 seconds, and restart. The last digit may vary by model.

Can steam inside the microwave cause this code?

Heavy steam or moisture can reach the sensor and upset it. Letting the microwave dry out and restarting is a reasonable check, and a repeat means a test.

Book a visit

Still seeing C-70 / C-71 / C-72?

A technician diagnoses it on site and gives you the price in writing before any work starts.

(713) 561-5298