Bosch Dishwasher ⚠️ Stop Using

Bosch Dishwasher Error Code E01

Bosch Dishwasher error code E01: Pump relay failure on control board.

Last reviewed: Aug 7, 2026 Last updated: Aug 7, 2026

Methodology: Bosch dishwasher pages are reviewed against manufacturer support documentation and grouped by fault family before adding practical symptoms, safety notes, and repair steps.

Sources: Manufacturer fault-code sheets, service manuals, and recurring field-repair patterns.

Bosch Owner Support - Dishwasher troubleshooting and owner documentation — Official Bosch support entry point for dishwasher troubleshooting and manuals.

Limits: Guidance is informational and may not match every model-year or revision. Confirm with the official manual and diagnostics before replacing parts. For safety-critical or electrical work, use a qualified technician.

Should I unplug it?

⚠️ Stop using it

Safe to leave powered off. Do not attempt to repair circuit boards without electronics experience.

Can I fix it myself?

Technician Recommended

Part: Control board / PCB

How much will it cost?

DIY: $80–$300 (board replacement)

Technician: $200–$600

⏱ 30–90 min

What Does Error E01 Mean on Your Bosch Dishwasher?

Bosch Dishwasher error code E01: Pump relay failure on control board.

What typically fails: Control board / PCB

What You're Probably Seeing

→ Standing water in bottom after cycle
→ Machine won't finish
→ Wet dishes

Common Causes

• Drain filter clogged with food debris or glass
• Drain hose kinked, blocked, or installed incorrectly
• Drain pump obstructed or failing under load

What to Try First

1 Unplug the dishwasher for 60 seconds then plug back in — this resets the control board and clears many temporary faults
2 Check and clean the drain pump filter (usually behind a small door at the bottom front)
3 Inspect the drain hose for kinks, blockages, or improper height
4 Test the drain pump — if it hums but won't move water, replace it ($50–$120 part)
5 Check all wiring harness connections to the main control board — reseat any loose connectors

🛠️ You'll need: Screwdriver set, Multimeter · Time: 30–90 min

💡 Try this first: Unplug the appliance for 60 seconds, then plug back in. This resets the control board and clears many temporary faults.

Questions People Also Ask

What does Bosch Dishwasher error code E01 mean? ▼

Error code E01 on a Bosch Dishwasher means: Pump relay failure on control board. The appliance detected this condition and has stopped or limited operation to prevent further damage.

How do I fix Bosch Dishwasher error code E01? ▼

First, unplug the dishwasher for 60 seconds to reset the control board. If error E01 returns, the root cause (pump relay failure on control board) needs to be addressed — check connections, filters, and hoses before calling a technician.

Is it safe to use my Bosch Dishwasher with error code E01? ▼

It depends on the cause. Most E01 errors mean the appliance has stopped itself as a safety measure. Check the 'Should I unplug it?' section above for specific guidance on this error.

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