mypros+
Error code reference

Miele Oven Error Code F193

Bottom heat Pt1000 temperature sensor (R30/22) or wiring harness short-circuited.

Miele codesMiele oven codes

Bottom heat Pt1000 temperature sensor (R30/22) or wiring harness short-circuited.

First step from the service manual

Check the wiring harness.

The complete diagnostic procedure includes additional test steps, resistance specifications, wiring diagram references, and component test points.

MyPros+ Max

Get the full diagnostic procedure for F193.

  • Step-by-step tests with expected resistance, voltage, and continuity values
  • Wiring diagram references and connector pinouts from the OEM service manual
  • Verified part numbers when replacement is required
Get the full procedure

$29/month · Cancel anytime · Or $9.95 3-day pass

What F193 means on a Miele oven

Miele oven error code F193 indicates a short circuit condition in the bottom heat Pt1000 temperature sensor circuit, specifically component R30/22 or its associated wiring harness. A Pt1000 sensor is a platinum resistance temperature detector that reads 1000 ohms at 0 degrees Celsius and increases in resistance as temperature rises. A short circuit in this circuit causes the resistance to drop abnormally low, which the oven control board interprets as an impossible temperature reading and triggers the fault code to prevent unsafe operation.

The bottom heat element relies on the Pt1000 sensor to regulate temperature accurately during baking and roasting cycles. When the sensor or wiring harness shorts, the control board loses reliable feedback from the bottom heating zone and cannot maintain proper temperature control. Short circuits in this context typically occur when the sensor probe body contacts the oven cavity metal, when insulation on the wiring harness degrades from prolonged heat exposure, or when a connector pin bridges to ground.

Diagnosis should begin with a thorough inspection of the wiring harness running from the sensor to the control board, looking for pinched wires, melted insulation, or corroded connectors. If the harness checks out, the Pt1000 sensor itself should be tested with a multimeter. At room temperature, a healthy Pt1000 sensor should read approximately 1000 to 1085 ohms. A reading near zero or a direct short to ground confirms sensor failure.

Source: manufacturer service documentation.

Common causes of F193

  1. 01

    Damaged wiring harness insulation

    Part replacement

    Prolonged exposure to high oven temperatures can cause the plastic insulation on the sensor wiring harness to crack, melt, or wear through, allowing bare wires to contact the oven chassis or each other. Inspect the full length of the harness for discoloration, melted spots, or exposed copper.

  2. 02

    Failed Pt1000 temperature sensor (R30/22)

    Part replacement

    The sensor element itself can develop an internal short, particularly after repeated thermal cycling over years of use. Testing the sensor with a multimeter should show approximately 1000 to 1085 ohms at room temperature; a reading near zero confirms a shorted sensor.

  3. 03

    Pinched or crushed wiring harness

    Wiring / connection

    During a previous repair or oven reassembly, the sensor wiring harness may have been routed incorrectly and pinched between metal panels, causing the insulation to breach and create a short. Check harness routing behind the oven cavity liner and along panel seams.

  4. 04

    Corroded or bridged connector terminals

    Wiring / connection

    Moisture or grease contamination inside a harness connector can cause conductive buildup that bridges terminals and simulates a short circuit. Inspect all connectors in the sensor circuit for corrosion, debris, or discoloration and clean or replace as needed.

  5. 05

    Sensor probe contacting the oven cavity

    Wiring / connection

    If the sensor mounting bracket is loose or broken, the probe body can shift and make direct metal-to-metal contact with the oven cavity wall, grounding the circuit and triggering the short circuit fault. Verify the sensor is properly seated and secured in its mount.

See the test procedure for each cause

Frequently asked questions about F193

What does F193 mean on a Miele oven?
F193 on a Miele oven means the bottom heat Pt1000 temperature sensor (R30/22) or its wiring harness has a short circuit. The Pt1000 sensor monitors the temperature of the bottom heating zone, and a short causes the resistance in the circuit to drop to an abnormally low level. The oven control board detects this invalid reading and triggers the fault to prevent uncontrolled heating. The oven will not operate normally until the fault is resolved.
Can I fix the F193 error myself?
A knowledgeable DIYer can begin by visually inspecting the wiring harness connected to the bottom heat sensor for obvious damage such as melted insulation or pinched wires. Testing the Pt1000 sensor with a multimeter is also within reach if you are comfortable working inside the oven cavity after disconnecting power. However, if the harness or sensor needs replacement, sourcing the correct Miele components and reassembling properly can be complex, so a qualified technician is recommended if you are unsure.
Is it safe to use my Miele oven while the F193 code is active?
No, you should not continue using the oven with an active F193 fault. The error indicates a short circuit in the bottom heat temperature sensor circuit, which means the oven cannot accurately monitor or regulate heat in the bottom zone. Operating the oven in this condition risks uncontrolled temperatures, potential damage to the appliance, and a possible fire or burn hazard. Disconnect the oven from power and have it inspected before resuming use.
Will resetting my Miele oven clear the F193 error?
A power reset may temporarily clear the F193 code from the display, but the fault will return as soon as the oven attempts to read the bottom heat sensor and detects the short circuit again. The underlying electrical fault in the sensor or wiring harness must be physically repaired before the code will stay clear. Repeatedly resetting without fixing the root cause does not resolve the issue.
How much does it cost to repair a Miele oven F193 error?
Repair costs vary depending on whether the problem is a damaged wiring harness, a faulty Pt1000 sensor, or a combination of both. Parts costs for a Miele Pt1000 sensor or harness assembly typically range from around 40 to 150 dollars depending on the specific model. Adding professional labor, total repair costs generally fall in the range of 150 to 400 dollars or more depending on your location and the extent of the damage found during diagnosis.

Related Miele oven codes

All Miele oven codes
View all 51 Miele oven codes

78,000+ service manuals · 160,000+ error codes · 55+ brands

Get Started

$29/month · Cancel anytime · Or $9.95 3-day pass