If your Bosch washing machine displays an E18 error code, it means your washer is having trouble draining water. This issue can interrupt your washing cycle, leave clothes soaking wet, and even cause water leakage if not fixed promptly.

The good news is that you can often resolve the E18 error at home without needing a technician. In this guide, I’ll explain:

• What the Bosch washing machine E18 error means
• The main causes of the error
• Step-by-step solutions to fix it
• How to prevent it from happening again

What is the E18 error in a Bosch washing machine?

The E18 error code on a Bosch washing machine indicates a drainage problem. This happens when the washer is unable to pump out water efficiently, causing a delay in the wash cycle.

Ignoring this error can lead to:

• Water not draining properly
• Clothes remaining wet after the cycle
• Potential damage to the drain pump

To fix this issue, it is important to understand what is causing it.

What causes the E18 error code?

Blocked Drain Filter

Over time, lint, hair, coins, and small debris can collect in the drain filter, blocking water flow.

Clogged Drain Hose

A twisted or clogged drain hose can prevent water from exiting the machine.

Drain Pump Issues

The drain pump can get clogged with dirt or become faulty, stopping water from being pumped out.

Plumbing or Installation Faults

If the drain hose is not installed correctly or if there is a blockage in the home’s drainage system, water may not drain properly.

How do I clear the fault code on my Bosch washing machine?

Once you fix the drainage problem, the E18 error should disappear automatically. However, if the error remains, try these steps:

1. Turn off and unplug the washer for a few minutes.
2. Clean the drain filter and drain hose.
3. Run a quick and short rinse cycle to check whether the issue is resolved.
4. Manually reset the machine (see reset instructions below).

If the error persists, it might indicate a deeper issue with the drain pump or plumbing.

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What is E18 water supply fault?

Many people confuse the E18 error with a water supply problem, but they are different.

Error Code	Issue Type	Possible Causes
E18	Drainage issue	Blocked filter, clogged hose, faulty pump
E17	Water supply issue	Low water pressure, clogged inlet valve

The E18 error is not related to water supply. It strictly relates to drainage problems.

How do you fix Bosch washing machine E18 error?

Step 1: Turn Off the Machine and Unplug It

Always unplug the washing machine before working on it for safety.

Step 2: Check and Clean the Drain Filter

1. Locate the drain filter (usually at the bottom front of the washer).
2. Place a towel or shallow container under the filter to collect all water.
3. Unscrew the filter cap carefully remove any debris, such as lint, coins, or hair.
4. Rinse the filter under running water and reinstall it securely.

Get to know why your washing machine leaking from bottom and fix with our solutions.

Step 3: Inspect and Clear the Drain Hose

1. Locate the drain hose at the back of the machine.
2. Disconnect it from the drain pipe.
3. Check for clogs by running water through it or using a wire to remove blockages.
4. Reattach the hose and ensure it is not bent or twisted.

Step 4: Examine the Drain Pump

1. If the issue persists, the drain pump may be clogged.
2. Remove the filter cap and check if the pump impeller moves freely.
3. If the pump is making unusual noises, it may need replacement.

Step 5: Restart the Washing Machine

Plug the machine back in, run a short cycle, and check if the E18 error disappears.

How do I reset my washer after error code?

If the E18 error remains after fixing the issue, try these resetting method of a washing machine:

Method 1: Power Reset

1. Turn off the washer and unplug it for five to ten minutes.
2. Plug it back in and restart the cycle.

Method 2: Reset via Control Panel

1. Press and hold the “Start” button for 3-5 seconds.
2. If your model has a reset function, follow the instructions in the manual.

How to prevent E18 error in the future?

• Clean the drain filter every one to two months.
• Check the drain hose regularly for kinks or clogs.
• Avoid washing items with loose threads or excessive lint.
• Run a maintenance cycle with vinegar or descaler every few months.

Conclusion

The Bosch washing machine E18 error is a common drainage issue caused by a clogged filter, blocked drain hose, or faulty drain pump. Thankfully, it is usually easy to fix by cleaning the filter, checking the hose, and resetting the machine.

Regular maintenance, such as cleaning the filter monthly and ensuring the drain hose is clear, can help prevent this issue. If the error persists after troubleshooting, it may indicate a more serious problem requiring professional assistance. Addressing the E18 error promptly ensures your washing machine runs efficiently and avoids further complications.

Most Common Questions About Bosch Washing Machine E18

1. Can I fix the E18 error myself, or do I need a technician?

Most E18 errors can be fixed at home by cleaning the drain filter and hose. If the issue continues, professional help may be required.

2. How often should I clean the drain filter?

It is recommended to clean the filter every one to two months to prevent blockages.

3. Will the E18 error code disappear after fixing the issue?

Yes, but some Bosch washing machines may require a manual reset.

4. Can detergent buildup cause the E18 error?

Yes, too much detergent in drawer can create soap scum, leading to drain blockages.

5. What if my washing machine still shows E18 after fixing it?

• Double-check the drain filter and hose.
• Ensure the drain pump is working.
• If the issue persists, contact Bosch customer support.