Bosch Dishwasher: not pumping water

Professional Repair Guide

What is this symptom?

If your Bosch dishwasher is not pumping water, you may notice water pooling at the bottom of the tub after a cycle. This issue can stem from a clogged filter, a blocked drain hose, or a malfunctioning pump. Ensuring proper water drainage and circulation is essential for effective cleaning, so addressing this problem promptly is crucial.

Urgency: Medium

Important Tips for Bosch Models

  • Bosch official troubleshooting focuses on clearing the filter and checking the pump; if unresolved, contact Bosch support for service.

Possible Causes

Clogged filter or debris in pump housing

How to Identify: Standing water remains after cycle; visible debris in lower filter area; water not leaving tub

Part: Filter and drain pump housing

Blocked or kinked drain hose

How to Identify: Dishwasher doesn’t drain despite filter/pump cleared; hose may be twisted or bent under the sink or behind unit

Part: Drain hose

Faulty drain pump or impeller damage

How to Identify: Pump motor may hum but no water moves; debris may have broken impeller fins; water still remains after clearing visible blockages

Part: Drain pump/impeller

Drain system connection issues (sink/garbage disposal/air gap blockage)

How to Identify: Dishwasher drains slowly or not at all when connected to clogged disposal or air gap; water backs up into dishwasher

Part: Air gap/drain connection

DIY Solutions

Clean filter and pump housing

Moderate 15-30 minutes
Tools Needed: gloves, sponge, soft brush
  1. Turn off and unplug dishwasher
  2. Remove lower rack and filter assembly
  3. Clean filter with warm water and soft brush
  4. Remove pump cover and clear any debris from housing using sponge/brush
  5. Reinstall pump cover and filter and test cycle
⚠️ Safety First: Ensure power is off before reaching into pump area

Inspect and clear drain hose

Moderate 20-40 minutes
Tools Needed: screwdriver, bucket, flashlight
  1. Disconnect dishwasher from power
  2. Pull dishwasher forward to access back
  3. Disconnect drain hose where it connects to sink/disposal
  4. Inspect for kinks, twists, or debris
  5. Straighten hose or flush out blockages then reconnect
⚠️ Safety First: Disconnect power and water before working

Professional Repairs

Replace drain pump or impeller

Estimated Cost: $80 - $250

Replace circulation pump and motor assembly

Estimated Cost: $150 - $350

When to Call a Professional

Dishwasher shows error codes related to pump failure
Pump motor makes unusual noise or hums without functioning
Internal electrical issues suspected
Water still not pumped after clearing blockages and basic checks

Preventive Maintenance

  • Clean filter and check pump area: Blockages that lead to non-pumping or draining issues
    Frequency: monthly
  • Inspect drain hose position: Kinks or blockages that impede water flow
    Frequency: annually

Frequently Asked Questions

Why is my Bosch Dishwasher not pumping water?
Common causes include a clogged filter, blocked drain hose, or a faulty drain pump.
How do I fix Bosch Dishwasher not pumping water myself?
You can clean the filter and pump housing or inspect the drain hose for clogs.
How much does it cost to fix not pumping water?
Professional repairs can range from $80 to $350 depending on issues.
When should I call a technician for not pumping water?
If DIY solutions don't resolve the issue or if you suspect a pump failure.

References & Sources

Community Analytical Insights

Analysis based on real user discussions from appliance repair communities

Can I Fix This Myself?

65%
DIY Success Rate Difficulty: Either

Common Issues Reported by Users

  • Clogged drain filter or hose
  • Faulty drain pump
  • Blocked or kinked drain hose
  • Malfunctioning float switch
  • Electrical issue or faulty control board

User Suggested Solutions

  1. Check and clean the drain filter and hose. Remove any debris or buildup that may be obstructing water flow. Ensure the filter is properly seated.

  2. Inspect the drain pump for blockages or damage. If the pump is clogged, clean it out. If it's faulty, consider replacing it.

  3. Examine the drain hose for kinks or blockages. Ensure it is properly connected and not obstructed.

  4. Test the float switch for functionality. If it's stuck or malfunctioning, it may need to be replaced.

  5. Check the electrical connections and control board for any signs of damage. If the control board is faulty, it will need professional replacement.

Analysis based on 1 community discussions
View Sources

Data compiled from real discussions on r/appliancerepair and r/Appliances:

  1. Dishwasher - Repair or Replace (AU)

Community Discussions

stopped pumping water, water within the bay, dropping water mid wash, not heating

Considering replacement due to potential pump failure and desire for a new warranty.

Pro needed View on Reddit →

Source: Reddit r/appliancerepair

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