🍽️Dishwasher

E01

Thermador · DWHD770WFP 24 in 39 dBA Emerald Series Dishwasher with Steam Cleaning and WiFi

Thermador DWHD770WFP 24 in 39 dBA Emerald Series Dishwasher with Steam Cleaning and WiFi E01 Error Fix: Water Inlet Valve Failure

The dishwasher detected that the water inlet valve is not opening or closing properly, causing improper water fill levels. This can lead to the dishwasher not filling with water or overfilling, affecting wash cycles.

High severity2 fixes available

Quick Answer

Error E01 on the Thermador DWHD770WFP 24 in 39 dBA Emerald Series Dishwasher with Steam Cleaning and WiFi means: Water Inlet Valve Failure. The top-ranked community fix is “Replace Water Inlet Valve” (medium difficulty, ~45 min, DIY cost: $35-$50). 2 community-ranked fixes available below.

Published February 2026 · 2 fixes · dishwasher

Content is based on manufacturer service documentation, community repair experience, and OEM technical bulletins. Always verify with your owner's manual.Learn about our editorial standards.

Root Cause Analysis

Water Supply IssuePrimary

When to Call a Professional

While many dishwasher repairs can be done safely at home, consider hiring a qualified technician if:

This is a high severity error — continued use may cause damage or a safety hazard
The repair involves electrical wiring, gas lines, or refrigerant
You've tried the top-ranked fix and the error persists
You smell gas, see sparking, or notice water leaking
The repair requires specialized tools you don't have
Your appliance is still under manufacturer warranty

Average professional repair cost for this issue: $120-$180.

Other Thermador DWHD770WFP 24 in 39 dBA Emerald Series Dishwasher with Steam Cleaning and WiFi Error Codes

E02

Drain Pump Malfunction

2 fixes

E03

Door Lock Switch Fault

2 fixes

E04

Heating Element Failure

Float Switch Stuck

Control Board Failure

2 fixes

E07

Temperature Sensor Error

Water Leak Detected

Detergent Dispenser Fault

2 fixes

People Also Ask About Thermador DWHD770WFP 24 in 39 dBA Emerald Series Dishwasher with Steam Cleaning and WiFi Error E01

What does error code E01 mean on a Thermador DWHD770WFP 24 in 39 dBA Emerald Series Dishwasher with Steam Cleaning and WiFi?

Error code E01 on the Thermador DWHD770WFP 24 in 39 dBA Emerald Series Dishwasher with Steam Cleaning and WiFi means: Water Inlet Valve Failure. The dishwasher detected that the water inlet valve is not opening or closing properly, causing improper water fill levels. This can lead to the dishwasher not filling with water or overfilling, affecting wash cycles.

How do I fix error code E01 on my Thermador DWHD770WFP 24 in 39 dBA Emerald Series Dishwasher with Steam Cleaning and WiFi?

The most successful fix is "Replace Water Inlet Valve" (medium difficulty, ~45 minutes). Estimated DIY cost: $35-$50. HomeMD has 2 community-ranked fixes for this error.

Is error code E01 on a Thermador DWHD770WFP 24 in 39 dBA Emerald Series Dishwasher with Steam Cleaning and WiFi serious?

This error is rated high severity. You should address it promptly — continued use could cause damage or safety concerns.

Can I fix Thermador DWHD770WFP 24 in 39 dBA Emerald Series Dishwasher with Steam Cleaning and WiFi error E01 myself?

Yes — the top-ranked community fix ("Replace Water Inlet Valve") is rated medium difficulty and takes about 45 minutes. Tools needed: Phillips screwdriver, Adjustable wrench, Multimeter.

How much does it cost to repair Thermador DWHD770WFP 24 in 39 dBA Emerald Series Dishwasher with Steam Cleaning and WiFi error E01?

DIY cost: $35-$50. Professional repair typically costs $120-$180. Many homeowners save money by trying the top-ranked community fix first.

What other error codes does the Thermador DWHD770WFP 24 in 39 dBA Emerald Series Dishwasher with Steam Cleaning and WiFi have?

The Thermador DWHD770WFP 24 in 39 dBA Emerald Series Dishwasher with Steam Cleaning and WiFi has 8 other known error codes, including: E02 (Drain Pump Malfunction), E03 (Door Lock Switch Fault), E04 (Heating Element Failure), E05 (Float Switch Stuck), E06 (Control Board Failure), and 3 more.

What other error codes does the Thermador DWHD770WFP 24 in 39 dBA Emerald Series Dishwasher with Steam Cleaning and WiFi have?

The Thermador DWHD770WFP 24 in 39 dBA Emerald Series Dishwasher with Steam Cleaning and WiFi has 8 other known error codes:

E02 — Drain Pump Malfunction (2 fixes)
E03 — Door Lock Switch Fault (2 fixes)
E04 — Heating Element Failure (2 fixes)
E05 — Float Switch Stuck (2 fixes)
E06 — Control Board Failure (2 fixes)
E07 — Temperature Sensor Error (2 fixes)
E08 — Water Leak Detected (2 fixes)
E09 — Detergent Dispenser Fault (2 fixes)

Ad Space — banner

Replace ADSENSE_PUBLISHER_ID in AdUnit.tsx