Error Code: F03 Difficulty: Hard
Problem: Problems with draining the water (water does not drain).
How to Fix F03 Error (Step-by-Step)
- Disconnect the washer from power by unplugging it from the wall outlet to ensure safety.
- Locate the small service door on the bottom front of the washer. Place a shallow pan and several towels in front of it to catch residual water.
- Open the service door. Slowly and carefully unscrew the drain pump filter cap, allowing the trapped water to drain into the pan. Once drained, fully remove the cap.
- Clear any debris, lint, or foreign objects from the filter and the pump housing. Check if the small propeller (impeller) inside the pump can spin freely with your finger.
- If the filter is clear and the impeller is not blocked but the washer still won’t drain, the drain pump is likely faulty. Disconnect the internal hoses from the pump by squeezing their spring clamps with pliers and sliding them down. Be prepared for more water to spill.
- Disconnect the electrical wire connector from the pump. Remove the screws holding the pump in place and take out the old pump.
- Install the new drain pump, ensuring it is securely screwed in. Reconnect the hoses and their clamps, and plug in the electrical connector. Reinstall the clean filter cap, close the service door, and test the washer with a drain/spin cycle.
- Turn the appliance off, wait about 2 minutes, then turn it back on.
What to Check Next on This Bosch Washer
Bosch Washer Error F03: Use the code or symbol as the starting clue, then confirm the actual symptom before ordering parts.
- Unplug the washer before touching wiring, the lock, the pump area, or the control panel.
- Check the door lock, drain filter, inlet supply, and visible harness connections before replacing controls.
- If the code returns during the same part of the cycle, match the repair path to that stage: fill, wash, drain, spin, lock, or control response.
If the issue returns after these checks, match replacement parts to the complete Bosch model number from the appliance tag. The same code can point to different components depending on the exact model and when the failure appears.
Recommended Parts to Check
No exact official OEM part number is listed here because the correct Bosch washer part can vary by complete model number. These are targeted part-category searches, not universal fit claims.
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Bosch washer electronic control boardCommon replacement category: Main control boardFit note: Exact OEM part number varies by full Bosch washer model number. Confirm compatibility before buying.Confidence: Medium
This category can be relevant for control and communication faults after wiring and connector checks. -
Bosch washer user interface control panelCommon replacement category: User interface / display boardFit note: Exact OEM part number varies by full Bosch washer model number. Confirm compatibility before buying.Confidence: Medium
This category can be relevant for display, button, selector, or cycle-control faults. -
Bosch washer drain pump assemblyCommon replacement category: Drain pumpFit note: Exact OEM part number varies by full Bosch washer model number. Confirm compatibility before buying.Confidence: Medium
This category can be relevant for drain, no-spin, and water-removal symptoms after filter and hose checks.
Before ordering: match the part to the complete Bosch washer model number on the appliance tag.
Still Not Working?
If the replacement part didn’t fix the issue, you may have a wiring problem or main board failure.
More options (for a better recommendation)
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When It’s Better to Replace Than Repair
Sometimes replacing an appliance makes more financial sense than putting more money into repairs.
Here are a few signs it may be time to shop for a new one:
For repair parts, verify exact fit with the full washer model number before buying; these links are general replacement-appliance shopping options.
- ✓Appliance over 8-10 years old
- ✓Repair cost over 50% of replacement
- ✓Multiple recent breakdowns
- ✓Major component failure
Recommended Replacement Options
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Expert: Mike Sullivan
EPA Section 608 Certified Technician with 18+ years experience.
Read Editorial Standards →Browse all Bosch error codes: Bosch Error Codes
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