What Does Error Code E19 Mean on a Bosch Washing Machine?
Clean the drum and check that the machine is not overloaded, then run a short hot cycle to see if the heating completes normally — an overloaded drum is the most overlooked cause of E19 and this check takes about 5 minutes.
Fault description
Error code E19 means your Bosch washing machine has detected that the water inside the drum is not reaching the required temperature within the expected time window. The machine monitors how long heating takes during a cycle, and when that window is exceeded, it stops the programme and displays E19 to protect the laundry and the appliance.
When this error appears, the wash cycle will typically pause or abort mid-programme. You may notice that the water feels cool or lukewarm when you open the door, or that the machine has been running far longer than usual before stopping. The drum may still contain water, so wait for any drain cycle to complete before opening the door.
The fault sits within the heating circuit — the component responsible for warming the water to the temperature you selected. In most cases the root cause is a failed heating element, a faulty NTC temperature sensor, or a wiring issue between these components and the main control board.
Causes
- Failed heating element — The heating element is the most common cause of E19. Over time, elements burn out or develop breaks in the coil, meaning they draw no power and produce no heat, so the water never warms up.
- Faulty NTC temperature sensor — The NTC sensor measures water temperature and reports it to the control board. If the sensor has drifted out of calibration or failed completely, the board may receive incorrect readings and conclude that heating is taking too long even when the element is working.
- Scale build-up on the heating element — In hard-water areas, limescale coats the surface of the heating element and acts as an insulator. This forces the element to work much harder and longer to heat the water, eventually triggering the E19 timeout.
- Wiring or connection fault — Loose, corroded, or damaged wiring between the heating element, the NTC sensor, and the control board can interrupt the circuit. The element may be physically intact but unable to receive power or send temperature data reliably.
- Overloaded drum — A heavily overloaded drum restricts water circulation around the heating element, slowing the rate at which the whole body of water warms. In borderline cases this can push heating time beyond the machine's threshold and trigger E19.
- Main control board fault — Less commonly, the control board itself may fail to send the correct voltage to the heating element or misinterpret sensor data. This is usually only suspected after the element and sensor have been tested and confirmed good.
Step-by-Step Fix
- 1
Check the load size and redistribute laundry
Remove some items if the drum is packed tightly. A drum should be no more than three-quarters full for a standard wash. Restart the cycle and observe whether the machine completes the heating phase without displaying E19.
- 2
Run a descaling cycle
Add a proprietary washing machine descaler to the drum — not the detergent drawer — and run the hottest cycle available, typically 90°C. Limescale on the element is a very common cause of slow heating in hard-water areas, and a descaling cycle can restore normal performance without any dismantling.
- 3
Power cycle the machine
Switch the machine off at the wall socket and leave it unplugged for at least two minutes. This clears any temporary error stored in the control board's memory. Plug back in, select a programme with a high wash temperature, and run it to see if the fault returns.
- 4
Inspect the wiring to the heating element and NTC sensor
Unplug the machine from the mains before doing anything inside. Pull the machine forward and remove the rear panel (usually held by two or three screws). Locate the heating element at the base of the drum and the NTC sensor clipped nearby. Check that all connectors are firmly seated and look for any signs of burning, corrosion, or broken wires. Reseat any loose connectors and replace any visibly damaged wiring.
- 5
Test the heating element with a multimeter
With the machine unplugged, disconnect the two spade terminals from the heating element. Set a multimeter to resistance (Ohms) and place one probe on each terminal. A healthy Bosch heating element typically reads between 20 and 30 Ohms. A reading of zero (short circuit) or infinite resistance (open circuit) confirms the element has failed and needs replacing.
- 6
Test the NTC temperature sensor
Disconnect the NTC sensor connector and measure its resistance at room temperature. Most Bosch NTC sensors read approximately 10,000–15,000 Ohms at 20°C. A reading far outside this range, or no reading at all, indicates a faulty sensor. NTC sensors are inexpensive and straightforward to swap out.
- 7
Replace the faulty component
Once you have identified whether the heating element or NTC sensor has failed, source the correct replacement part using your machine's full model number (found on the label inside the door frame). Fit the new part, reassemble the machine, and run a full hot cycle to confirm the E19 error has cleared.
Affected models
Select your model to see its full troubleshooting page.
When to call a service technician
If you have tested both the heating element and the NTC sensor with a multimeter and both components read within normal ranges, the fault is likely in the wiring harness or the main control board — areas that require specialist diagnostic equipment and experience to assess safely. Attempting to repair or replace a control board without the correct knowledge risks further damage to the appliance.
You should also call a service technician if you are uncomfortable working inside the machine, if the wiring shows signs of burning or heat damage beyond a simple loose connector, or if the machine is still under warranty, as DIY repairs may void the cover.
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Frequently Asked Questions
Can I still use my Bosch washing machine while it shows E19?
It is not advisable. When E19 is active, the machine is not heating the water to the selected temperature, which means laundry will not be properly cleaned and hygiene cycles will not work as intended. Running repeated cycles in this state also puts additional strain on the heating circuit and could worsen the underlying fault.
How much does it cost to replace a Bosch washing machine heating element?
A replacement heating element for a Bosch washing machine typically costs between £20 and £50 for the part itself, depending on the model. If you fit it yourself the total cost stays low. A service technician call-out and fitting will add labour charges on top, so it is worth getting a quote before deciding whether to repair or replace an older machine.
How do I find the right heating element for my specific Bosch model?
Open the door and look for the rating label on the inner door frame or drum rim — it will show the full model number, usually starting with letters such as WAT, WAN, or WGB. Enter this number on a spare parts website to find the exact compatible element. Using the full model number rather than just the series name ensures you get the correct wattage and fitting.
Could a low mains voltage cause the E19 error?
In rare cases, a sustained drop in mains voltage can reduce the power delivered to the heating element, causing it to heat more slowly than normal and potentially triggering the E19 timeout. If your neighbours are also experiencing electrical issues or you notice other appliances behaving unusually, contact your electricity supplier to check the supply voltage at your property.
Will E19 clear itself after the machine cools down?
The error code will clear when you reset the machine by switching it off at the socket, but the underlying fault will remain. If the heating element or sensor is genuinely faulty, E19 will return as soon as you run another cycle that requires heating. A power cycle is useful for ruling out a temporary glitch, but a recurring E19 always needs investigation.