Bosch Dishwasher Error Code E01: Causes, Fixes, and Easy Solutions

If your Bosch dishwasher suddenly stops and shows E01, it can feel frustrating. The good news? This error is usually related to the control system and can often be diagnosed quickly. In this guide, you’ll learn exactly what E01 means and how to fix it step by step.

What Does Bosch Dishwasher Error Code E01 Mean?

Error code E01 in a Bosch dishwasher indicates a fault in the main control board (power module).

This board controls nearly everything in your dishwasher, including:

• Wash cycles

• Heating system

• Pump operations

When E01 appears, it means the system has detected a critical internal malfunction.

Common Causes of E01 Error

1. Power Surge or Electrical Issue

Sudden voltage fluctuations can damage or confuse the control board.

2. Faulty Control Board

The most common reason. The internal circuitry may fail over time.

3. Loose or Damaged Wiring

Wires connected to the control module may be:

• Loose

• Burnt

• Corroded

4. Moisture Damage

Water or steam entering the control panel can cause short circuits.

How to Fix Bosch Dishwasher E01 Error

Step 1: Perform a Basic Reset

Sometimes the system just needs a restart.

How to reset:

1. Turn off the dishwasher

2. Unplug it from the power source

3. Wait 5–10 minutes

4. Plug it back in and restart

👉 If the error disappears, it was likely a temporary glitch.

Step 2: Check Power Supply

• Ensure stable voltage

• Avoid using extension cords

• Check your home’s circuit breaker

Step 3: Inspect Wiring (Advanced)

⚠️ Only do this if you’re comfortable with basic electrical work.

• Turn off power completely

• Open the control panel

• Look for:

  • Loose connectors

  • Burn marks

  • Damaged wires

Step 4: Replace the Control Board

If the error persists, the control module is likely faulty.

Signs you need replacement:

• Dishwasher won’t start

• Error returns immediately after reset

• Random cycle failures

👉 This usually requires a technician.

How to Prevent E01 Error

• Use a voltage stabilizer

• Keep the control panel dry

• Avoid frequent power cuts without protection

• Schedule regular maintenance

Bosch dishwasher error code E01 usually points to a control board issue, but don’t panic. Start with a simple reset, check your power supply, and inspect wiring if needed. If the problem continues, replacing the control module is the most reliable fix.

If your dishwasher is under warranty, don’t open it yourself. Contact Bosch support to avoid voiding coverage.

Read More:

How to reset a dishwasher | Step-by-step guide

Dishwasher won't start? Use this simple diagnosis & fix guide

Dishwasher beeping continuously? Causes and easy fixes

How to reset a dishwasher control board