Sensors are critical components in modern AEG appliances. They monitor temperature, pressure, humidity, and other variables to ensure correct operation. When a sensor fails, you may see error codes, poor performance, or complete shutdown. This guide covers how to replace common sensors in AEG washing machines, dryers, dishwashers, ovens, and refrigerators. We include specific steps, part numbers, and approximate prices in euros from Spanish retailers such as Recambios AEG and Electrorecambios. Always disconnect power and water before starting any repair. If you are unsure, consult a professional — see our article When to Call a Technician for AEG Appliances.

Identifying a Faulty Sensor

Common symptoms of a defective sensor include:

  • Error codes on the display (e.g., E10, F11, E68)
  • Appliance stops mid-cycle or does not start
  • Incorrect temperature (water not heating, oven not reaching set temperature)
  • Overfilling or underfilling in washing machines or dishwashers
  • Excessive condensation or poor drying in dryers

To confirm a sensor fault, you can use a multimeter to test resistance. For example, a NTC thermistor in an AEG washing machine typically reads around 20 kΩ at 25°C. Refer to your appliance’s wiring diagram. For a list of common error codes, see Common AEG Error Codes List.

Replacing the Temperature Sensor in an AEG Washing Machine

The temperature sensor (NTC) is usually located on the heating element or on the tub. Part numbers vary by model, but a common one is AEG 136200201. Price: approximately €12–€20.

Steps:

  1. Unplug the washing machine and turn off the water supply.
  2. Remove the top panel (usually two screws at the back).
  3. Locate the heating element at the bottom rear of the tub. The NTC sensor is clipped onto the element or attached with a bracket.
  4. Disconnect the wiring connector. Use a multimeter to check resistance – if open or shorted, replace.
  5. Remove the old sensor (may require unscrewing or unclipping).
  6. Install the new sensor, ensuring proper contact with the heating element.
  7. Reconnect the wiring, replace the top panel, and plug in the machine.
  8. Run a short cycle to test. If error codes persist, see AEG Washing Machine Error Codes.

Replacing the Humidity Sensor in an AEG Dryer

Condenser dryers and heat pump dryers use humidity sensors to regulate drying time. A faulty sensor can cause over-drying or under-drying. For AEG heat pump dryers, the sensor is often a pair of metal strips on the lint filter housing or inside the door frame. Part number AEG 136200301 costs about €15–€25.

Steps:

  1. Disconnect the dryer from power.
  2. Open the door and remove the lint filter. The sensor strips are visible on the filter housing or behind the door seal.
  3. Remove the screws holding the sensor bracket.
  4. Disconnect the wire harness and remove the old sensor.
  5. Install the new sensor, reattach the bracket, and connect wires.
  6. Replace the lint filter and close the door. Reconnect power.
  7. Run a test cycle. For more on dryer issues, read AEG Dryer Not Heating.

Replacing the Water Level Sensor (Pressure Switch) in an AEG Dishwasher

The water level sensor (pressure switch) tells the dishwasher when to stop filling. Failure can cause overflow or no fill. Part number AEG 136200401 costs around €10–€18.

Steps:

  1. Unplug the dishwasher and turn off the water supply.
  2. Remove the lower front panel (kickplate) by unscrewing or unclipping.
  3. Locate the pressure switch – a small plastic box with a hose attached to the sump.
  4. Disconnect the hose and wiring connector.
  5. Unscrew the switch from its mounting.
  6. Install the new switch, reconnect hose and wiring.
  7. Replace the kickplate, turn on water, and plug in. Run a rinse cycle to test.
  8. If errors persist, check AEG Dishwasher Error Codes.

Replacing the Oven Temperature Sensor (Thermistor) in an AEG Oven

An oven that does not heat properly or shows error codes like E68 may have a faulty temperature sensor. The sensor is located at the back of the oven cavity, usually behind a metal cover. Part number AEG 136200501 costs €15–€30.

Steps:

  1. Disconnect the oven from power.
  2. Remove the oven door for easier access (optional).
  3. Remove the back panel inside the oven (usually held by screws).
  4. Locate the sensor probe – it protrudes into the cavity.
  5. Disconnect the wiring connector from the sensor.
  6. Unscrew the sensor from its bracket and remove it.
  7. Install the new sensor, tighten screws, reconnect wiring.
  8. Replace the back panel and door. Reconnect power.
  9. Test the oven at a set temperature. For other oven issues, see AEG Oven Not Heating.

Replacing the Refrigerator Temperature Sensor in an AEG Fridge

If your AEG fridge is not cooling properly or shows error codes, the temperature sensor (often a thermistor) may be defective. The sensor is usually located inside the fridge compartment, near the evaporator or on the side wall. Part number AEG 136200601 costs €10–€20.

Steps:

  1. Unplug the refrigerator.
  2. Remove all food and shelves if necessary.
  3. Locate the sensor – it may be behind a plastic cover or clipped to the evaporator.
  4. Gently pry off the cover or unclip the sensor.
  5. Disconnect the wiring connector.
  6. Install the new sensor, ensuring it is positioned correctly.
  7. Replace the cover and shelves. Plug in the fridge.
  8. Monitor temperature over 24 hours. If the problem persists, consult AEG Fridge Not Cooling.

Where to Buy Genuine AEG Sensors in Spain

Purchase replacement sensors from authorized dealers to ensure compatibility and quality. Popular Spanish online retailers include:

  • Recambios AEG (recambiosaeg.es) – offers genuine parts with prices ranging from €10 to €30.
  • Electrorecambios (electrorecambios.com) – stocks AEG sensors and provides free shipping over €50.
  • Amazon España – search for your part number; many third-party sellers offer OEM parts.
  • Servicio Técnico Oficial AEG – contact local authorized service centers for parts and installation.

Always verify your appliance’s model number (found on the rating plate) before ordering. For a complete overview of repairs, read The Complete Guide to AEG Appliance Repair in Spain.

Safety Precautions

  • Always disconnect the appliance from the mains before starting any repair.
  • For washing machines and dishwashers, turn off the water supply to avoid flooding.
  • Use a multimeter to test sensors – do not rely solely on visual inspection.
  • If you are not comfortable with electrical work, hire a qualified technician.
  • Keep children and pets away from the work area.

Related articles

  • Common AEG Error Codes List
  • AEG Washing Machine Error Codes
  • AEG Dryer Not Heating
  • AEG Oven Not Heating
  • When to Call a Technician for AEG Appliances