Hoover Washing Machine E03 Error: Meaning, Causes & Safe Checks
Quick answer
Hoover E03 (or E3) means the machine couldn’t drain quickly enough. Unplug it, then clear the drain pump filter behind the small door at the front. If the machine drains into the kitchen sink waste, clean food debris out of that connection, and check the black bung was removed if the sink pipework was recently replaced.
Also shown as E3
This code can mean different things on different model series. Check your manual, or Hoover UK support with your model number.
What E03 means on a Hoover washing machine
The machine hasn’t been able to drain the water away quickly enough.
Applies to: Hoover washing machines and washer dryers on the model list in Hoover’s advice centre.
What you might notice
- Water left in the drum
- E03 or E3 on the display
Likely causes
- Blocked drain pump filter
- Food debris blocking the under-sink connection
- Black bung left in a newly replaced sink pipe
- A fault in the drain pump
What you can safely check yourself
- The code or problem comes back after you’ve done the safe checks on this page.
- The next step would mean removing a cover or panel, or working on the pump, valves, heater, motor, door lock or wiring. That is a job for a qualified engineer.
- Water is leaking from inside the appliance or is near the plug or socket. Don’t touch the plug with wet hands or while standing in water. Switch off at the consumer unit instead.
- The appliance is still under warranty. Contact the manufacturer first, because DIY work can affect your cover.
Work through these in order. Stop as soon as one of the signs above applies.
Clean the drain pump filter Take care
- Switch off and unplug the appliance at the wall socket before you touch hoses, filters or the back of the machine. Make sure your hands and the plug area are dry.
- Water inside can be hot after a hot wash. Wait for it to cool before opening a filter.
- Expect water to come out. Put towels and a shallow tray or baking dish down first.
- Never force a locked door, a stuck filter cap or a seized part. Forcing it usually causes more damage.
- Find the small flap at the bottom front of the machine. Your manual shows the exact location and whether there is a small emergency drain hose.
- With towels and a tray in place, release the water slowly, using the emergency hose if there is one, or by turning the filter cap a little at a time. Expect more water than you think, and empty the tray as often as you need to.
- When the water has stopped, unscrew the filter fully and remove fluff, coins, hair grips and other debris. Rinse it under the tap.
- Look into the opening to check the pump blade can turn freely. If you can see it, manufacturers suggest turning it gently with a pencil, never with your fingers.
- Refit the filter firmly in its locked position and close the flap. Check for drips the next time the machine runs.
Don’t: Don’t reach in with fingers past the filter opening.
Don’t: Don’t open the filter while the machine is running or the water is hot.
Check the sink trap, spigot or standpipe isn’t blocked
- If the machine drains into the sink waste, run the sink tap and check the sink empties normally.
- Food debris often builds up where the machine’s drain hose joins the sink pipework. With the machine unplugged, you can undo that connection and clear it.
- If the machine was just installed, or the sink waste was replaced, check the blanking cap or bung has been removed from the spigot the hose connects to.
- If the sink itself drains slowly, the household drain is blocked rather than the machine. Clear it as you would any blocked sink.
When to call an engineer
If the checks above don’t clear E03, or any of the stop signs apply, contact Hoover or a qualified appliance engineer. Have the model and serial number from the rating label ready, and start with Hoover UK support.
Repair or replace?
Most E03 cases are cleared by the safe checks above. If they don’t help, the remaining causes are parts an engineer has to diagnose. We don’t publish repair prices because they vary by area, part and model.
Related problems
Related codes
- E02Hoover The machine hasn’t filled with water within about 6 minutes.
- 5CSamsung The washing machine has detected a drainage problem: the water isn’t pumping out as expected.
- OELG The washing machine can’t drain the water out.
- E18Bosch The washing machine isn’t draining: the water isn’t being pumped away.
- E20AEG The washing machine can’t pump the water out within the time it expects.
- E20Zanussi The machine can’t drain the water within the time it expects.
Different code or symptom? Use the fault finder, see all Hoover washing machine codes, or read how Hoover codes work. Not sure it’s safe? Read our safety information.
Sources
- Hoover UK: Error message E03 appears in the display of the washing machine Manufacturer UK · checked 11 October 2026
- AEG UK: Washing machine does not drain, displays error code E20, E21 or C2 Manufacturer UK · checked 11 October 2026
- Samsung UK: How to resolve a 5E or 5C error code on a Samsung washing machine Manufacturer UK · checked 11 October 2026
- Bosch Home UK: Cleaning a washing machine filter Manufacturer UK · checked 11 October 2026
- LG UK: What is an LG washing machine OE error? Manufacturer UK · checked 11 October 2026
- Miele UK: Fault F11 (washing machine): the drain is restricted Manufacturer UK · checked 11 October 2026
Last checked against these sources: .
We write every page in our own words from manufacturer guidance and check it against the sources above. If your manual says something different, follow your manual. How we check.