🔥Oven / Range

F20

Thermador · MED301JS 30 in Masterpiece Series Single Wall Oven with 4.3 cu ft Capacity and Steam Bake

Thermador MED301JS 30 in Masterpiece Series Single Wall Oven with 4.3 cu ft Capacity and Steam Bake F20 Error Fix: Oven Temperature Sensor Short Circuit

The temperature sensor has a short circuit, causing incorrect temperature readings and the oven to shut down heating to prevent damage.

High severity2 fixes available

Quick Answer

Error F20 on the Thermador MED301JS 30 in Masterpiece Series Single Wall Oven with 4.3 cu ft Capacity and Steam Bake means: Oven Temperature Sensor Short Circuit. The top-ranked community fix is “Replace Temperature Sensor” (medium difficulty, ~30 min, DIY cost: $20-$40). 2 community-ranked fixes available below.

Published February 2026 · 2 fixes · oven

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

Sensor MalfunctionPrimary

Electrical Fault → Wiring Harness Damaged

When to Call a Professional

While many oven 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: $100-$160.

Other Thermador Models with Error F20

PODS301W 30 in Wall Oven with 4.3 cu ft Capacity and Convection Cooking

oven · 2 fixes

PRD486WDGU Pro Grand 48"

oven · 2 fixes

PRL366WG 36 in Pro Grand Range with 5 Burners, 22,000 BTU Power Burner, and Convection Oven

oven · 2 fixes

T36BT925NS 36 in 20.9 cu ft Freedom® Collection French Door Refrigerator with WiFi Connectivity and ThermaFresh System

refrigerator · 2 fixes

Other Thermador MED301JS 30 in Masterpiece Series Single Wall Oven with 4.3 cu ft Capacity and Steam Bake Error Codes

Temperature Sensor Failure

Oven Relay Stuck

Oven High Limit Thermostat Tripped

2 fixes

F12

Oven Temperature Sensor Open Circuit

2 fixes

F13

Oven Door Gasket Torn

2 fixes

F14

Oven Broil Element Failure

2 fixes

F15

Oven Door Latch Stuck

2 fixes

F16

Oven Display Panel Failure

2 fixes

People Also Ask About Thermador MED301JS 30 in Masterpiece Series Single Wall Oven with 4.3 cu ft Capacity and Steam Bake Error F20

What does error code F20 mean on a Thermador MED301JS 30 in Masterpiece Series Single Wall Oven with 4.3 cu ft Capacity and Steam Bake?

Error code F20 on the Thermador MED301JS 30 in Masterpiece Series Single Wall Oven with 4.3 cu ft Capacity and Steam Bake means: Oven Temperature Sensor Short Circuit. The temperature sensor has a short circuit, causing incorrect temperature readings and the oven to shut down heating to prevent damage.

How do I fix error code F20 on my Thermador MED301JS 30 in Masterpiece Series Single Wall Oven with 4.3 cu ft Capacity and Steam Bake?

The most successful fix is "Replace Temperature Sensor" (medium difficulty, ~30 minutes). Estimated DIY cost: $20-$40. HomeMD has 2 community-ranked fixes for this error.

Is error code F20 on a Thermador MED301JS 30 in Masterpiece Series Single Wall Oven with 4.3 cu ft Capacity and Steam Bake serious?

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

Can I fix Thermador MED301JS 30 in Masterpiece Series Single Wall Oven with 4.3 cu ft Capacity and Steam Bake error F20 myself?

Yes — the top-ranked community fix ("Replace Temperature Sensor") is rated medium difficulty and takes about 30 minutes. Tools needed: Phillips screwdriver, Multimeter.

How much does it cost to repair Thermador MED301JS 30 in Masterpiece Series Single Wall Oven with 4.3 cu ft Capacity and Steam Bake error F20?

DIY cost: $20-$40. Professional repair typically costs $100-$160. Many homeowners save money by trying the top-ranked community fix first.

What other error codes does the Thermador MED301JS 30 in Masterpiece Series Single Wall Oven with 4.3 cu ft Capacity and Steam Bake have?

The Thermador MED301JS 30 in Masterpiece Series Single Wall Oven with 4.3 cu ft Capacity and Steam Bake has 8 other known error codes, including: F1 (Temperature Sensor Failure), F10 (Oven Relay Stuck), F11 (Oven High Limit Thermostat Tripped), F12 (Oven Temperature Sensor Open Circuit), F13 (Oven Door Gasket Torn), and 3 more.

Which other Thermador models have the F20 error?

Error code F20 also appears on 4 other Thermador models: PODS301W 30 in Wall Oven with 4.3 cu ft Capacity and Convection Cooking, PRD486WDGU Pro Grand 48", PRL366WG 36 in Pro Grand Range with 5 Burners, 22,000 BTU Power Burner, and Convection Oven, T36BT925NS 36 in 20.9 cu ft Freedom® Collection French Door Refrigerator with WiFi Connectivity and ThermaFresh System. The fix may vary by model, so check each model's specific page for tailored repair steps.

What other error codes does the Thermador MED301JS 30 in Masterpiece Series Single Wall Oven with 4.3 cu ft Capacity and Steam Bake have?

The Thermador MED301JS 30 in Masterpiece Series Single Wall Oven with 4.3 cu ft Capacity and Steam Bake has 8 other known error codes:

F1 — Temperature Sensor Failure (2 fixes)
F10 — Oven Relay Stuck (2 fixes)
F11 — Oven High Limit Thermostat Tripped (2 fixes)
F12 — Oven Temperature Sensor Open Circuit (2 fixes)
F13 — Oven Door Gasket Torn (2 fixes)
F14 — Oven Broil Element Failure (2 fixes)
F15 — Oven Door Latch Stuck (2 fixes)
F16 — Oven Display Panel Failure (2 fixes)

Which other Thermador models have the F20 error?

Error code F20 also appears on 4 other Thermador models:

PODS301W 30 in Wall Oven with 4.3 cu ft Capacity and Convection Cooking (oven) · 2 fixes
PRD486WDGU Pro Grand 48" (oven) · 2 fixes
PRL366WG 36 in Pro Grand Range with 5 Burners, 22,000 BTU Power Burner, and Convection Oven (oven) · 2 fixes
T36BT925NS 36 in 20.9 cu ft Freedom® Collection French Door Refrigerator with WiFi Connectivity and ThermaFresh System (refrigerator) · 2 fixes

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