E21 and E22 error codes on an electric Samsung range: A troubleshooting guide
Samantha Bullington / Tuesday December 19, 2023
It can be frustrating to see an E21 or E22 error code on your Samsung range, but these messages are often easy to resolve with a few troubleshooting steps.
Let’s walk through these steps together to diagnose and fix the E21 and E22 errors so you can get your range back up and running.
READ MORE: Oven Tips for Cooking a Holiday Turkey, Ham & More
Disclaimer: The error code information provided in this article is based on general service manuals and may not apply to your specific appliance model. While we strive to offer helpful advice for DIY appliance repairs, variations in models and configurations can lead to differences in troubleshooting steps, error codes and part replacements. For the most accurate guidance, we strongly recommend consulting the technical sheet for your specific appliance model.
What do E21 and E22 error codes mean?
E21 and E22 error codes can be caused by various factors like a temperature sensor, wiring issues, or a problem with the control board.
If the temperature sensor – which monitors the internal oven temperature and reports back to the control board – malfunctions or loses connection, the control board won’t get accurate temperature readings. This can trigger the E21 and E22 displays.
While both these error codes may point to the same general issue, E21 can also signify an open circuit. That could mean the range has a wiring problem or a defective component. E22 may also indicate a short circuit that could be caused by faulty wiring or a bad oven control board.
READ MORE: How to prevent appliance fire hazards
What you need
To troubleshoot and fix the problem, you’ll need to pull the range out and access the wiring at the back. Here are some other items that you might need while working on the machine:
- Multimeter
- Work gloves
- Nut driver(s)
- Small container to hold screws and small parts
- Screwdriver(s)
Safety precautions
Before you start any repair work on your appliance, safety should be your top priority. Always make sure your appliance is unplugged from the power source or turned off at the circuit breakers. This will prevent any electrical mishaps during the repair process.
Step 1: Test the oven temperature sensor
- With the oven fully disconnected from power, detach the temperature sensor wiring from the control boards.
- Inspect the temperature sensor wiring and probe for any damage, corrosion, or debris buildup that could hinder temperature detection. If the wires directly attached to the sensor are damaged, the sensor will need to be replaced.
- If the wiring is good, use a multimeter to measure the sensor’s resistance. Check your machine’s wiring diagram to determine the acceptable room temperature resistance value for your oven model. Generally, you should have between 1000 and 1100 ohms. You should get a steady resistance reading that matches the specifications. If it shows infinity or far-off values, that means it’s time to replace the sensor.
READ MORE: How To Use A Multimeter
Step 2: Check the control board connectors and wiring
The oven temperature sensor connects to the main control board via wiring harnesses and intermediary boards.
If everything else checks out OK and you’re still seeing the error codes, then you’ll need to replace the control board.
In the case of an E22 error, you may also need to replace the oven control board if the shorted wiring has caused damage. Check the board visually for burn spots or corrosion and any other damage.
To check the main control board:
- Visually inspect where the sensor wiring plugs into the main control board and any intermediate control boards it routes through. Look for any loose, burnt, or damaged connectors.
- Tighten any loose plugs firmly into their sockets.
- Make sure the sensor wiring is intact and securely connected at both ends. Wiggling harness cables shouldn’t cause any change in resistance.
- Test the wiring for continuity with a multimeter. If the wiring is compromised or does not have continuity, the wiring harness will need to be replaced.
Step 3: Replace faulty components
If testing reveals any faulty components, you can purchase replacement parts by taking your model number to AppliancePartsPros.com to search for what you need.
After you get your new parts, make sure everything is securely installed.
READ MORE: My part is no longer available! What do I do now?
Step 4: Verify proper operation
With all repairs complete, restore the power and test the range’s function. Try heating to a set temperature and use a secondary thermometer to see if the readings match the target temperature.
Monitor your oven through several full heat cycles to make sure the errors are fully resolved before you use your oven for cooking again.
READ MORE: Why It’s Best to Choose OEM Over Aftermarket Parts for Appliance Repairs
Preventing future E21 and E22 codes
To avoid E21 and E22 error codes in the future:
- Keep your oven clean. Built-up grease and food debris can damage the temp probe.
- Don’t routinely operate your oven above the max-rated temperature. Overheating can degrade components over time.
READ MORE: 4 Simple Ways to Reduce Kitchen Waste
More information
Thanks for reading! We hope this guide helped you get those error messages off your Samsung range.
If you have any other appliance repair needs or projects, you can find more resources including our DIY blog at AppliancePartsPros.com. There, you can enter your model number to order the exact parts you need. Most orders arrive in two business days.
You can also reach our award-winning customer service team at 1-877-477-7278, chat with a pro on our website and watch thousands of free video tutorials on our YouTube channel.
Hey there, I’m Samantha and I’m super excited to be a part of the Appliance Parts Pros team! With 9 years of experience, I’ve had the awesome opportunity to assist countless customers in troubleshooting their home appliances and finding DIY repair solutions.