Oven
E8
The E8 error code on a Samsung oven indicates a fault with the oven’s temperature sensor or control board communication — it’s a moderately serious fault that will prevent the oven from heating safely until resolved.
What does this error mean?
Samsung uses the E8 code to flag that the oven’s temperature sensor (also called a thermistor) is sending a reading that falls outside the expected range, or has stopped communicating with the main control board altogether. In plain terms, the oven can’t confirm what temperature it’s actually reaching inside the cavity, so it shuts down the heating element as a safety precaution. This isn’t a cosmetic glitch — the oven is actively protecting you from potential overheating.
Est. repair cost
£15–£40 DIY sensor replacement; £80–£180 for a professional repair including labour
🔍 Likely causes
🛠️ Step-by-step fix
Step 1 – Hard reset: Switch the oven off at the wall socket (or trip the circuit breaker), wait 5 full minutes, then restore power. If E8 clears and doesn’t return, a temporary software glitch was the cause — monitor it closely.
Step 2 – Check for obvious heat damage: With the oven completely cool and unplugged, open the oven door and inspect the back interior wall. Look for any visible burn marks, melted plastic, or exposed wiring near the sensor probe — a small metal rod usually mounted at the back or top of the oven cavity.
Step 3 – Inspect the sensor connector: Carefully pull the oven away from the wall and remove the rear access panel (held by 4–6 screws). Locate the temperature sensor wire and its connector. Check for loose connections, corrosion (green or white residue), or melted insulation. Reconnect any loose plugs firmly.
Step 4 – Test or replace the temperature sensor: Samsung oven thermistors typically read around 1,080–1,100 ohms at room temperature (20°C). Use a multimeter set to resistance (Ω) and test across the sensor terminals. A reading far outside this range means the sensor has failed. Replacement sensors for Samsung ovens cost £15–£40 online — search your oven’s model number (found inside the door frame) to get the correct part.
Step 5 – Fit the replacement sensor: Unscrew the old sensor (usually 1–2 screws), unplug the connector, and fit the new one in reverse order. Reassemble the rear panel, restore power, and run a test cycle at 180°C for 20 minutes to confirm the fault has cleared.
Step 6 – If E8 persists after sensor replacement: Stop here. A persistent E8 after a confirmed sensor replacement points to a faulty control board (PCB), which requires a professional to diagnose and replace safely.
📞 When to call a professional
Call an appliance engineer if the E8 error returns after a hard reset and a new temperature sensor has been fitted — this almost certainly means the main control board has failed, which is not a safe or straightforward DIY job. When you call, tell the engineer: ‘My Samsung oven is showing error code E8, I’ve already replaced the temperature sensor and the fault persists.’ This saves diagnostic time and labour cost.
⚖️ Repair or replace?
A professional repair for an E8 fault — typically a sensor replacement or PCB swap — will cost £80–£180 including parts and labour in the UK. If your Samsung oven is under 5 years old, repair is almost always worthwhile. If it’s over 8 years old and requires a new control board (£100–£160 for the part alone), weigh that against a new mid-range Samsung oven at £400–£700 — replacement becomes the smarter financial decision.