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OEM VERIFIED BENCH
OFFICIAL FAULT CODEF4025
Miele
Miele // OFFICIAL DIAGNOSTIC BENCH

Miele Dishwasher F4025

DishwasherNTC Temperature Sensor & Thermistor
Premium built-in dishwasher with open illuminated stainless steel interior and precision spray arms
Dishwasher
Select Appliance Type
0ms Instant Telemetry Switch

Symptom / Description

FAULT

A temperature error is reported, with a risk of overheating or unregulated heating.

TELEMETRY // LIVESIG: FAULT_DETECTED

Root Cause

ROOT CAUSE

The NTC temperature probe is shorted or its wiring is damaged, sending a zero resistance value to the board.

CIRCUIT // SUBSYSTEMLOGIC: ROOT_ISOLATED

Repair Instructions

UNLOCKED
1With the power off, disconnect the NTC probe and measure its resistance. If it is close to zero ohms, the probe is defective and must be replaced. Examine the wiring harness.
AI diagnostic workshop engine analyzing appliance circuit schematics and error telemetry in real time
AI WORKSHOP PROTOCOL ENGINE
Direct extraction from OEM factory manuals & wiring schematics

Field Actions

DISPATCH
Need Help? Call a Certified TechnicianWorldwide Miele Parts Finder
Electrical & Safety Protocol

Always disconnect appliance from 230V/400V mains before opening panels. Use CAT III multimeter for circuit testing.

SWISS ATELIER TECHNICAL BLUEPRINT // 2026 SCHEMATIC STANDARD

Thermal & Heating Loop

Calrod Heating Element R1, Safety Klixon & NTC Thermistor Probe

CALIBRATED TEST POINTS (TP1 / TP2)
ACTIVE MULTIMETER BENCH
MAIN PCB CONTROLLER32-BIT MCUFIRMWARE v26.4SOLID-STATE RELAYTRIAC TY1 // 16A 600V230V AC MAINSLINE FILTER L-NJ1J2TP1TP2PRECISION BENCH METERAUTO-RANGE ΩCAT III24.6 ΩVΩCOMHEATING ELEMENT R1HEATER R1: 20-28 ΩSAFETY THERMOSTAT (KLIXON)NTC SENSOR (4.8-12kΩ)
Target Component
NTC Temperature Sensor Probe (Thermistor)
Nominal Resistance / Test Range
4.8kΩ–12kΩ (at 20°C–25°C)
Test Harness Pins
Across sensor pins 1-2 (unplugged harness)
Diagnostic Verification Rule
Zero or OL indicates open heating element or tripped safety thermostat. Check insulation to earth.
CALIBRATED BENCH PROTOCOL // CAT III 600V

Workshop Verification & Safety Checklist

WORKSHOP VERIFICATION PROTOCOLNTC Temperature Sensor & ThermistorDishwasher
2. Multimeter & Electrical Bench Tests (Ω)
MODE: OHMMETER (Ω)AUTO-RANGE
Precision digital multimeter probes measuring electrical resistance in Ohms on an appliance control board
CALIBRATED METROLOGY RESISTANCE BENCH (CAT III)
Nominal Resistance (Ω)
4.8kΩ–12kΩ (at 20°C–25°C)NOMINAL
0 Ω (SHORT)CALIBRATED BAND∞ OL (OPEN)
▲ NOMINAL OPERATING WINDOW
Target Component:NTC Temperature Sensor Probe (Thermistor)
Test Pins & Connections
PROBE (+)
PROBE (-)
Across sensor pins 1-2 (unplugged harness)
Tolerance & Diagnostic CriteriaNegative temperature coefficient: resistance drops smoothly when warmed with fingers. OL = open circuit.
1. Pre-Intervention Electrical Safety Protocols
  • !Electrical Safety Protocol: Disconnect 230V electrical mains power before removing appliance side or rear panels.
  • !Ensure tub water or heating chamber has cooled below 30°C before unclipping thermistor probe.
  • !Use CAT III 600V/1000V insulated test probes when tng at PCB edge connectors.
3. Preliminary Mechanical & Visual Checks
  • Inspect sensor immersion sleeve for calcification, limescale scale, or thermal paste degradation.
  • Check wiring harness for pinch points, chafing against chassis metal, and terminal pin oxidation.
  • Verify probe is firmly seated in its rubber grommet or bracket inside the water/air circuit.
Perform these diagnostic steps before triggering AI Deep Search or replacing boards.Certified Workshop Routine

Frequently Asked Questions: Miele F4025

FAQ TREE
What does error code F4025 mean on a Miele appliance?

Miele error code F4025 indicates: A temperature error is reported, with a risk of overheating or unregulated heating..

What is the root cause of Miele error code F4025?

The primary root cause for Miele code F4025 is: The NTC temperature probe is shorted or its wiring is damaged, sending a zero resistance value to the board..

How do I fix or resolve Miele error code F4025?

To resolve error code F4025: With the power off, disconnect the NTC probe and measure its resistance. If it is close to zero ohms, the probe is defective and must be replaced. Examine the wiring harness.

Is it safe to clear Miele error code F4025 by resetting power?

Resetting power (unplugging for 5–10 minutes) clears temporary memory errors. However, if Miele code F4025 persists, the physical component causing The NTC temperature probe is shorted or its wiring is damaged, sending a zero resistance value to the board. must be inspected or replaced.

How do I test electrical resistance for Miele code F4025 using a multimeter?

Set a digital multimeter to ohms (Ω). Disconnect power and test NTC Temperature Sensor Probe (Thermistor) across Across sensor pins 1-2 (unplugged harness). Expected nominal reading is 4.8kΩ–12kΩ (at 20°C–25°C). Tolerance: Negative temperature coefficient: resistance drops smoothly when warmed with fingers. OL = open circuit..

What safety protocol must be followed before servicing Miele code F4025?

Standard electrical safety protocol: 1. Disconnect 230V mains power before opening panels. 2. Verify zero voltage at test points. 3. Allow hot water or heating elements to cool below 30°C before handling.

What does Miele error code F4025 mean on a Dishwasher?

Miele error code F4025 on a Dishwasher indicates: A temperature error is reported, with a risk of overheating or unregulated heating.. Primary cause: The NTC temperature probe is shorted or its wiring is damaged, sending a zero resistance value to the board.. Recommended solution: With the power off, disconnect the NTC probe and measure its resistance. If it is close to zero ohms, the probe is defective and must be replaced. Examine the wiring harness..

What does Miele error code F4025 mean on a Tumble Dryer?

Miele error code F4025 on a Tumble Dryer indicates: A temperature error is reported, with a risk of overheating or unregulated heating.. Primary cause: The NTC temperature probe is shorted or its wiring is damaged, sending a zero resistance value to the board.. Recommended solution: With the power off, disconnect the NTC probe and measure its resistance. If it is close to zero ohms, the probe is defective and must be replaced. Examine the wiring harness..

Community Verification

COMMUNITY

Did this solution resolve the issue?

Miele F4025 — Multi-Appliance Technical Reference

Verified OEM diagnostic specifications across all appliance systems sharing this fault code.

Miele F4025 — Dishwasher

[ACTIVE]
Symptom / Description:

A temperature error is reported, with a risk of overheating or unregulated heating.

Root Cause:

The NTC temperature probe is shorted or its wiring is damaged, sending a zero resistance value to the board.

Repair Instructions:

With the power off, disconnect the NTC probe and measure its resistance. If it is close to zero ohms, the probe is defective and must be replaced. Examine the wiring harness.

Miele F4025 — Dryer

Symptom / Description:

A temperature error is reported, with a risk of overheating or unregulated heating.

Root Cause:

The NTC temperature probe is shorted or its wiring is damaged, sending a zero resistance value to the board.

Repair Instructions:

With the power off, disconnect the NTC probe and measure its resistance. If it is close to zero ohms, the probe is defective and must be replaced. Examine the wiring harness.

SEMANTIC KNOWLEDGE GRAPH // MIELE

Related Miele Dishwasher Error Codes

Diagnostic Link Mesh14 OEM Cross-References

Cross-referenced diagnostic codes for technicians inspecting similar component subsystems.

F4026Dishwasher
General System & Mechanical Integration
After the program ends, the drum continues to rotate intermittently.
Inspect Protocol
F4027Dishwasher
General System & Mechanical Integration
An error message relating to the automatic detergent dosing system appears.
Inspect Protocol
F4028Dishwasher
General System & Mechanical Integration
The screen displays a message or icon indicating the presence of a smart card.
Inspect Protocol
F4029Dishwasher
General System & Mechanical Integration
An alert asks to clean the lint filter, and drying performance is potentially reduced.
Inspect Protocol
F4030Dishwasher
Water Level Pressure Switch & Air Dome
The device displays a load sensor error, making automatic programs and water levels inaccurate.
Inspect Protocol
F4031Dishwasher
Drive Motor, Inverter & Tachometer Sensor
Miele F4031: Motor drive or inverter rotation anomaly in Dishwasher; drum/motor fails to spi...
Inspect Protocol
F4032Dishwasher
Door Lock Mechanism & Safety Interlock
The unit displays a door contact error and refuses to start or shuts down mid-cycle.
Inspect Protocol
F4033Dishwasher
Door Lock Mechanism & Safety Interlock
The device refuses to start the cycle, displaying a door-related error message.
Inspect Protocol
F4034Dishwasher
Door Lock Mechanism & Safety Interlock
The appliance door remains blocked after the end of the program.
Inspect Protocol
F4035Dishwasher
Door Lock Mechanism & Safety Interlock
The device reports a problem with the door position, preventing starting or causing shutdowns.
Inspect Protocol
F4036Dishwasher
Water Inlet Valve, Aquastop & Flowmeter
The program stops at the beginning and a tap symbol is displayed, indicating a lack of water.
Inspect Protocol
F4037Dishwasher
Water Inlet Valve, Aquastop & Flowmeter
Water filling is extremely slow and the cycle is interrupted with an error message.
Inspect Protocol
F4038Dishwasher
Water Level Pressure Switch & Air Dome
The device interrupts the current program, signaling an insufficient water level in the tank.
Inspect Protocol
F4039Dishwasher
Heating Element, Thermostat & Safety Fuse
The cycle runs cold and a heating error code is displayed.
Inspect Protocol
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