Bosch Dishwasher ✅ Safe for Now

Bosch Dishwasher Error Code E23

Bosch Dishwasher error code E23: Drain pump relay failure.

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?

✅ No — safe for now

Safe to leave off. Fix soon — water backup can cause mold or floor damage.

Can I fix it myself?

DIY Possible

Part: Drain pump / drain hose / filter

How much will it cost?

DIY: $0–$150 (pump or hose)

Technician: $100–$300

⏱ 20–45 min

What Does Error E23 Mean on Your Bosch Dishwasher?

Bosch Dishwasher error code E23: Drain pump relay failure.

What typically fails: Drain pump / drain hose / filter

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

How to Fix It Yourself

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 If the error persists after basic troubleshooting, contact a qualified appliance technician

🛠️ You'll need: Screwdriver set, Bucket, Wet/dry vacuum · Time: 20–45 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 E23 mean? ▼

Error code E23 on a Bosch Dishwasher means: Drain pump relay failure. The appliance detected this condition and has stopped or limited operation to prevent further damage.

How do I fix Bosch Dishwasher error code E23? ▼

First, unplug the dishwasher for 60 seconds to reset the control board. If error E23 returns, the root cause (drain pump relay failure) needs to be addressed — check connections, filters, and hoses before calling a technician.

Is it safe to use my Bosch Dishwasher with error code E23? ▼

It depends on the cause. Most E23 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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