The E06 error on your Bosch Dishwasher means the appliance has detected a problem with the heating circuit or the water temperature sensor (NTC sensor). This usually stops the wash cycle partway through, but it can often be fixed without calling an engineer.
| Error code | E06 |
|---|---|
| Meaning | Heating fault or NTC temperature sensor malfunction |
| Severity | Medium — the dishwasher will usually stop mid-cycle but is not dangerous if left unplugged |
| Time to fix | 15–45 minutes |
| Tools needed | Multimeter, screwdriver set (a cordless driver such as a Bosch drill helps when removing base panels) |
What the E06 error means
E06 is triggered when the dishwasher's control board doesn't receive the expected temperature signal from the NTC (Negative Temperature Coefficient) sensor, or when the heating element fails to reach the required temperature within a set time. The machine treats this as a safety issue and halts the cycle to avoid running with faulty heating. It's one of the more common fault codes on Bosch dishwashers and is often traceable to a single failed part rather than a wiring issue throughout the machine.
Common causes
- Faulty or disconnected NTC temperature sensor
- Failed heating element that no longer heats the water
- Limescale buildup insulating the heating element from the water
- Loose or corroded wiring connector at the sensor or heater
- Main control board misreading sensor signals
- Blocked water inlet reducing water contact with the heater
How to fix the E06 error
- Power cycle the dishwasher — Turn off at the wall, wait 2 minutes, then restart. This clears temporary sensor glitches.
- Check for limescale buildup — Run a descaling cycle with a dishwasher-safe descaler, especially in hard water areas, since scale on the heater is a leading cause of E06.
- Inspect the NTC sensor wiring — Unplug the machine, remove the lower access panel, and check the sensor connector for looseness or corrosion. Reseat or clean the connection.
- Test the heating element with a multimeter — A reading of infinity or zero ohms usually means the element has failed and needs replacing.
- Test the NTC sensor resistance — Compare the reading against Bosch's spec sheet for your model; a sensor well outside range should be replaced.
- Call a qualified appliance engineer — If the sensor and heater test fine, the fault likely lies with the main control board, which should be diagnosed by a professional.
FAQ
Can I still use the dishwasher with an E06 error showing?
No. The machine will stop heating water and may not complete a cycle properly, so it's best to fix the fault before running another load.
Is E06 expensive to fix?
Not usually. A replacement NTC sensor is inexpensive, and even a heating element is a moderate cost part. The main control board is the priciest fix, but it's the least common cause.
Does hard water make E06 more likely?
Yes. Limescale buildup on the heating element is one of the most frequent triggers, so regular descaling reduces the risk significantly.
