The E08 error on your Bosch Dishwasher means the appliance has detected a problem with water heating or flow during the wash cycle. In most cases this is caused by a faulty heating element, a blocked flow sensor, or low water pressure reaching the unit, and it can often be fixed at home without calling an engineer.
| Error code | E08 |
|---|---|
| Meaning | Water heating or flow rate fault detected by the control board |
| Severity | Medium — the dishwasher may still run but won't clean or heat properly |
| Time to fix | 15–45 minutes |
| Tools needed | Multimeter, screwdriver, towel (for water) |
What the E08 error means
Bosch dishwashers use sensors to monitor water flow and temperature throughout each cycle. When the E08 code appears, the control board has detected that water isn't heating or flowing at the expected rate within a set time window. This can result in a cycle that pauses, runs longer than usual, or ends with dishes still dirty or wet.
Common causes
- Faulty or worn heating element that no longer heats water to temperature
- Blocked or dirty flow meter/sensor restricting water measurement
- Low incoming water pressure from the household supply
- Kinked, crimped, or partially blocked water inlet hose
- Clogged filter at the base of the dishwasher affecting water circulation
- Failed thermistor sending incorrect temperature readings to the control board
How to fix the E08 error
- Check the water supply: Make sure the shut-off valve under the sink is fully open and household water pressure is normal.
- Inspect the inlet hose: Straighten out any kinks or bends and check for visible damage or blockages.
- Clean the filters: Remove and rinse the lower filter assembly to clear away food debris that may be restricting flow.
- Reset the dishwasher: Turn off power at the wall for two minutes, then restart to see if the error clears on its own.
- Test the heating element: With power disconnected, use a multimeter to check the heating element for continuity; replace it if it reads open circuit.
- Call a qualified engineer: If the error persists after these steps, the thermistor or control board itself may need professional diagnosis and replacement.
FAQ
Can I still run a wash cycle with the E08 error showing?
You can try, but dishes are unlikely to be properly cleaned or dried since the water may not reach the correct temperature.
Does E08 always mean the heating element is broken?
No. It's the most common cause, but low water pressure or a blocked filter can trigger the same code, so it's worth checking those first.
Is the E08 error dangerous?
It's not a safety hazard on its own, but repeated cycling with a heating fault can strain other components, so it's best fixed promptly. For general appliance troubleshooting habits, guides like Bosch Drill Overheating During Use: Causes and How to Fix It show how similar diagnostic steps apply across Bosch products.
