Oven
E3
The E3 error code on a Samsung oven indicates a problem with the oven temperature sensor — it’s one of the more common faults and, in most cases, is straightforward to diagnose and fix without an engineer.
What does this error mean?
E3 means your Samsung oven’s control board has detected that the temperature sensor (also called a thermistor or oven probe) is reading outside its expected range — either too high, too low, or an open circuit. The oven can’t regulate heat accurately without a working sensor, so it shuts down as a safety measure. This is the oven protecting itself and your food from dangerously incorrect temperatures, not a critical electrical failure.
Est. repair cost
£15–£35 DIY sensor replacement, or £80–£150 for a professional repair including parts and labour
🔍 Likely causes
🛠️ Step-by-step fix
Reset the oven first: switch it off at the wall socket (or trip the circuit breaker), wait 5 minutes, then power it back on. If E3 clears and doesn’t return, it was a temporary glitch.
Locate the temperature sensor: it’s a thin metal probe, usually mounted on the back wall inside the oven cavity, held in place by one or two screws. You can see it without any tools.
Visually inspect the sensor and its visible wiring for obvious damage — scorching, fraying, or a probe that looks bent or broken. If damaged, it needs replacing.
Test the sensor resistance with a multimeter (set to Ohms): disconnect the oven from power, pull the sensor plug from the back of the cavity, and measure across the two sensor terminals. A healthy Samsung oven sensor typically reads around 1,080–1,100 Ohms at room temperature. A reading of zero, infinite, or wildly different means the sensor has failed.
Replace the temperature sensor if faulty: Samsung oven sensors are widely available from UK spares suppliers (e.g. eSpares, 4ourhouse) for £15–£35. Match your model number exactly. Fitting is two screws and one plug connector — no specialist tools needed.
If the new sensor doesn’t clear E3, or you’re not comfortable using a multimeter, stop here and call a qualified appliance engineer — the fault is likely in the wiring harness or control board, which requires professional diagnosis.
📞 When to call a professional
Call an appliance engineer if E3 persists after fitting a new, correct-spec temperature sensor, or if you find burnt or melted wiring inside the oven cavity. Tell the engineer the exact error code (E3), your Samsung oven model number (printed inside the door frame), and whether the fault is constant or intermittent — this will save diagnostic time and cost.
⚖️ Repair or replace?
A sensor replacement is a very cost-effective repair — typically £15–£35 for the part if you do it yourself, or £80–£150 including labour from a reputable appliance engineer. If your Samsung oven is over 8–10 years old and the engineer suspects a control board fault (parts often £80–£150+ alone), replacing the oven becomes worth considering, especially if it’s a budget model. For a relatively new or mid-to-high-spec oven, repair is almost always the right call.