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Samsung Ovens & Ranges2017–present

Error Code C-70

Steam temperature sensor circuit open or shorted

Critical

Stop using immediately - risk of damage or safety issue

Also displayed as: C-70

What This Means

Steam sensor connector disconnected at Main PCB; Steam sensor connector disconnected at sensor; Open circuit in steam sensor wire harness; Short circuit in steam sensor wire harness; Defective steam temperature sensor; Main PCB failure

What actually causes this:

Broken sensor wire, water intrusion, or loose connector in steam circuit

First Thing to Check

Inspect steam sensor connector at Wall Main PCB (CN340)

Parts Involved

Steam sensorSensor connectorWire harnessMain PCBCN340 connector

How to Fix

  1. 1

    Check whether connector at the Main PCB has been inserted

  2. 2

    Check whether connector at the sensor has been inserted

  3. 3

    Check correct wiring between Wall Main PCB (CN340) and steam sensor

  4. 4

    Measure steam sensor resistance

This Error Applies To

Samsung DOC30M977D Series Ovens & Ranges (2017) (2017–present)

Service manual exact match: NQ70M7770DGService manual exact match: DOC30M977DS

Related Error Codes

C-d0

Shorted keypad keys detected

C-30

PCB internal temperature sensor malfunction

C-F0

Loss of communication between control boards

C-23

Temperature probe sensor short circuit detected

C-A2

Magnetron or convection cooling fan not operating correctly

C-20

Temperature sensor open circuit or short detected during operation

C-d1

Door lock mechanism positioned incorrectly or not functioning

C-F2

Loss of communication with touch panel interface

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