What does error code C-70 mean on a Samsung ovens & ranges?

Steam function cannot measure steam temperature Steam sensor connector disconnected; Steam sensor failure; Broken wire harness

How do I fix error code C-70 on a Samsung ovens & ranges?

1. undefined: Disconnect power 2. undefined: Check connector at Main PCB 3. undefined: Check connector at steam sensor 4. undefined: Measure sensor resistance

Samsung Ovens & Ranges2017–present

Error Code C-70

Steam function cannot measure steam temperature

Critical

Stop using immediately - risk of damage or safety issue

Also displayed as: C-70

What This Means

Steam sensor connector disconnected; Steam sensor failure; Broken wire harness

What actually causes this:

Loose connector from vibration, steam condensation corrosion, or sensor element failure

First Thing to Check

Power off and reseat steam sensor connector at Main PCB

Parts Involved

Steam temperature sensorMain PCBSensor harness

How to Fix

1
Disconnect power
2
Check connector at Main PCB
3
Check connector at steam sensor
4
Measure sensor resistance

This Error Applies To

Samsung DOB30M977D Series Ovens & Ranges (2017) (2017–present)

Service manual exact match: DOB30M977D*

Related Error Codes

C-72

Steam drainage pump not removing water completely

C-30

Internal PCB thermal protection sensor not responding

C-A2

Cooling fan motor not responding to control signals

C-d1

Door lock mechanism is not responding or is stuck

C-F0

Central control PCB cannot communicate with display control board

C-F2

Touch panel cannot communicate with main control board

C-20

Temperature sensor is disconnected or failed - oven cannot measure temperature

C-23

Meat temperature probe circuit is shorted

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