Bosch Dishwasher: watertap error

Professional Repair Guide

What is this symptom?

Experiencing a Bosch Dishwasher watertap error? This indicates a problem with water supply, often due to low pressure or a closed tap, preventing your dishwasher from filling and starting properly. Understanding the causes and solutions can help you resolve the issue quickly.

Urgency: Medium

Important Tips for Bosch Models

  • Bosch dishwashers use a self-diagnosis system; watertap indicates water supply insufficiency or blockage and may require pressure of ~10L/min from tap.

Possible Causes

Insufficient water supply (low pressure or closed tap)

How to Identify: Dishwasher displays water tap error before filling; water supply tap may be partially closed or water flow is visibly low when tested.

Part: House water tap and supply line

Internal siphoning or drain hose issue preventing fill

How to Identify: Dishwasher tries to fill but water continually drains due to incorrect hose position or siphoning.

Part: Drain hose installation

DIY Solutions

Check and fully open the water supply tap

Easy 5 minutes
  1. Ensure the household water supply valve to the dishwasher is fully open.
  2. Turn on the tap and verify substantial flow (~10L/min) near the inlet hose before reconnecting the dishwasher.
⚠️ Safety First: Do not force water connections; ensure no leaks form when turning tap on.

Straighten and inspect the inlet hose

Easy 10 minutes
  1. Pull dishwasher out slightly to access the inlet hose.
  2. Remove kinks or twists and ensure hose is not pinched behind the unit.
⚠️ Safety First: Turn off water supply before adjusting hose.

Clean the water inlet filter

Moderate 15 minutes
Tools Needed: Small brush
  1. Turn off water supply and disconnect inlet hose.
  2. Rinse the filter screen under running water and brush away debris.
  3. Reconnect hose securely and restore water.
⚠️ Safety First: Ensure hose reconnects tight to avoid leaks.

Reset dishwasher to clear latch error memory

Easy 5 minutes
  1. Turn off dishwasher power at the appliance or breaker for ~5 minutes.
  2. Restore power and attempt a new cycle.

Professional Repairs

Replace water inlet valve

Estimated Cost: $80 - $180

Diagnose and fix internal flow or control issues

Estimated Cost: $100 - $350

When to Call a Professional

Water tap error persists after verifying supply, clearing hoses, and filter cleaning
Signs of internal leaks or water in base (possible E15 condition)
Suspected electrical component failure or sensors triggering error

Preventive Maintenance

  • Periodically clean inlet hose filter: Water tap error due to debris buildup
    Frequency: Every 3-6 months
  • Inspect hoses for kinks: Restricted water flow to dishwasher
    Frequency: Quarterly

Frequently Asked Questions

Why is my Bosch Dishwasher watertap error?
The watertap error often results from insufficient water supply, such as low pressure or a closed tap.
How do I fix Bosch Dishwasher watertap error myself?
Check the water supply tap, inspect the inlet hose, clean the water inlet filter, and reset the dishwasher.
How much does it cost to fix watertap error?
Professional repair costs range from $80 to $350, depending on the issue and necessary repairs.
When should I call a technician for watertap error?
Consider calling a technician if DIY solutions don't resolve the issue or if internal flow problems are suspected.

References & Sources

Community Analytical Insights

Analysis based on real user discussions from appliance repair communities

Can I Fix This Myself?

75%
DIY Success Rate Difficulty: DIY

Common Issues Reported by Users

  • Clogged water inlet filter
  • Faulty water inlet valve
  • Kinked or damaged water supply hose

User Suggested Solutions

  1. Check and clean the water inlet filter. Turn off the water supply, disconnect the hose from the dishwasher, and remove the filter. Clean it under running water, then reassemble and test the dishwasher.

  2. Inspect the water inlet valve for proper function. If it appears faulty, replace it. Ensure the power is off, disconnect the dishwasher, and follow the manufacturer's instructions for replacement.

  3. Examine the water supply hose for kinks or damage. If found, straighten or replace the hose. Ensure all connections are secure before testing the dishwasher.

Analysis based on 1 community discussions
View Sources

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

  1. Bosch Dishwasher - Watertap

Community Discussions

watertap error

Replaced the water inlet valve, which resolved the watertap error initially.

DIY View on Reddit →

Source: Reddit r/appliancerepair

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