Bosch Dishwasher: not heating, shutting off unexpectedly

Professional Repair Guide

What is this symptom?

Is your Bosch dishwasher not heating water during wash or dry cycles and shutting off unexpectedly? This issue can leave your dishes cold or damp, and disrupt your cleaning routine. Common causes include a faulty heating element or thermostat, control board malfunctions, or door latch issues. Understanding these problems can help you troubleshoot effectively.

Urgency: Medium

Important Tips for Bosch Models

  • Official Bosch guidance suggests booking an engineer visit for no-heat issues
  • Bosch error codes E09/E12 related to heater scale or inlet issues may need service

Possible Causes

Faulty heating element

How to Identify: Water remains cold throughout wash/dry phases; testing with multimeter shows no continuity.

Part: Heating element

Thermostat or temperature sensor failure

How to Identify: Dishwasher does not reach proper temperature even if heating element intact; multimeter test shows sensor out of spec.

Part: Thermostat/temperature sensor

Control board or electronic fault leading to mid-cycle shutdown

How to Identify: Cycle stops unexpectedly, possible error codes, no heating call initiated.

Part: Control board/electronics

Door latch or sensor malfunction causing safety shutdown

How to Identify: Dishwasher stops when door not fully latched or latch sensor fails mid-cycle.

Part: Door latch/switch

AquaStop (leak detection) triggered causing shutdown

How to Identify: Dishwasher stops mid-cycle with signs of water detection/leakage.

Part: AquaStop system

DIY Solutions

Check selected wash cycle and settings

Easy 5 minutes
  1. Ensure heat-required cycle (e.g., sanitize/heavy) is selected
  2. Verify child lock/delay start is off

Basic reset of dishwasher electronics

Easy 5 minutes
  1. Turn off dishwasher at wall or breaker
  2. Wait 2–5 minutes
  3. Restore power and restart cycle
⚠️ Safety First: Do not pull power during a wash cycle unless necessary

Inspect and test heating element

Advanced 30–60 minutes
Tools Needed: Multimeter, Screwdriver
  1. Disconnect power to dishwasher
  2. Access bottom heating element terminals
  3. Test continuity with multimeter
  4. Replace element if no continuity
⚠️ Safety First: Ensure power is fully disconnected before opening machine

Professional Repairs

Replace heating element

Estimated Cost: $80 - $200

Replace control board/electronics

Estimated Cost: $150 - $400

Replace thermostat/temperature sensor

Estimated Cost: $60 - $150

When to Call a Professional

Dishwasher stops mid-cycle repeatedly after basic checks
Error codes displayed indicating internal faults
Heating element or sensor testing requires multimeter beyond DIY comfort

Preventive Maintenance

  • Regular filter and spray arm cleaning: Flow obstructions that could disrupt cycle performance
    Frequency: monthly
  • Run cleaning cycle with dishwasher cleaner: Residue buildup that affects sensors/components
    Frequency: quarterly

Frequently Asked Questions

Why is my Bosch Dishwasher not heating, shutting off unexpectedly?
Common causes include a faulty heating element, thermostat failure, or control board issues.
How do I fix Bosch Dishwasher not heating, shutting off unexpectedly myself?
Check wash cycle settings and perform a basic reset. Inspect the heating element for continuity.
How much does it cost to fix not heating, shutting off unexpectedly?
Professional repair costs range from $60 to $400 based on the specific issue.
When should I call a technician for not heating, shutting off unexpectedly?
Call a technician if DIY solutions don't work or if you're uncomfortable performing advanced tests.

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

  • Faulty circuit board
  • Heating element failure
  • Thermal fuse blown
  • Water supply issues (low pressure or blockage)
  • Faulty door latch or switch

User Suggested Solutions

  1. Inspect and replace the faulty circuit board. Disconnect the dishwasher, remove the access panel, and replace the circuit board with a new one.

  2. Test and replace the heating element. Use a multimeter to check for continuity, and if faulty, replace it by accessing the bottom of the dishwasher.

  3. Check and replace the thermal fuse. Locate the fuse on the control board, test it for continuity, and replace if necessary.

  4. Inspect water supply for blockages or low pressure. Ensure the water inlet valve is functioning and that hoses are clear.

  5. Examine the door latch and switch for proper function. Replace if they are faulty to ensure the dishwasher operates correctly.

Analysis based on 1 community discussions
View Sources

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

  1. Bosch Dishwasher Strange Symptoms

Community Discussions

keeps shutting itself off every few minutes, won't heat, E14 error

The issue was identified as a faulty circuit board.

DIY View on Reddit →

Source: Reddit r/appliancerepair

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