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Error code reference

Thermador Cooktop Error Code E0116

Left ADB communication error or poor quality communication between induction modules

Thermador codesThermador cooktop codes

Left ADB communication error or poor quality communication between induction modules — wiring between ADB-PB incorrectly connected or faulty.

First step from the service manual

Check the wiring between ADB-PB.

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

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What E0116 means on a Thermador cooktop

The E0116 error code on a Thermador induction cooktop indicates a communication fault originating from the left ADB (Analog Driver Board). The ADB is responsible for controlling the induction modules, and it communicates with the power board (PB) through a dedicated wiring harness. When this communication link is interrupted, degraded, or absent, the cooktop's control system flags the fault and disables affected cooking zones to prevent unsafe operation.

The most common root cause of E0116 is a wiring problem between the ADB and the PB. This includes connectors that are incorrectly seated, harness wires that have been pinched or damaged during a previous service or installation, and terminals that have corroded or backed out of their connector housings. A loose connection can produce intermittent communication that the control system reads as poor quality rather than a total signal loss, which is why the error description references both a full communication error and degraded communication quality.

If wiring checks out and all connectors are properly seated and undamaged, the fault may lie within the left ADB itself or the power board. A failed ADB can no longer transmit valid data over the communication line, and a faulty PB may fail to correctly receive it. Diagnosis should begin with a thorough visual and physical inspection of the wiring harness between the two boards before any components are replaced.

Source: manufacturer service documentation.

Common causes of E0116

  1. 01

    Incorrectly connected wiring harness between ADB and PB

    Wiring / connection

    The harness connecting the left ADB to the power board may have been plugged into the wrong port or not fully seated. Inspect each connector for correct placement and firm engagement.

  2. 02

    Loose or partially disconnected connector

    Wiring / connection

    A connector on either the ADB or PB end of the communication harness may have worked loose over time due to vibration or heat cycling. Press each connector firmly until it clicks and check for any pin that has backed out of its housing.

  3. 03

    Damaged or pinched wiring harness

    Part replacement

    The harness between the ADB and PB may have been pinched, cut, or abraded, causing intermittent or complete signal loss. Trace the full length of the harness and look for visible damage, kinks, or areas where insulation has worn through.

  4. 04

    Corroded or oxidized connector terminals

    Wiring / connection

    Moisture exposure or age can cause oxidation on the connector pins, increasing resistance and degrading the communication signal. Inspect terminals closely and clean them if corrosion is present.

  5. 05

    Faulty left ADB or power board

    Part replacement

    If the wiring and connectors are all confirmed good, the left ADB or the power board itself may have failed internally. Component replacement is required after all wiring has been ruled out as the cause.

See the test procedure for each cause

Frequently asked questions about E0116

What does E0116 mean on a Thermador cooktop?
E0116 indicates a communication error or poor quality communication between the left ADB (Analog Driver Board) and the power board on a Thermador induction cooktop. The fault points specifically to the wiring harness connecting these two boards as the first area to inspect. The cooktop's control system monitors this communication link continuously and triggers the code when the signal is absent or degraded. Left-side induction zones may be disabled while this fault is active.
Can I fix E0116 myself without calling a technician?
A careful DIYer comfortable working inside appliances can perform the initial diagnostic step, which involves inspecting and reseating the wiring connectors between the ADB and the power board. If the harness is simply loose or misconnected, this may resolve the error without any parts. However, if the harness is damaged or a board has failed, repair becomes more involved and a qualified appliance technician is recommended.
Is it safe to keep using my Thermador cooktop with error code E0116 active?
You should not continue using the cooktop while E0116 is active. The error indicates a loss of proper communication between critical control components, and the affected induction zones may not respond correctly to commands. Operating the cooktop in this condition could lead to unpredictable behavior or failure to shut off properly.
Will resetting the cooktop clear the E0116 error?
A power reset by turning off the circuit breaker for 60 seconds and restoring power may temporarily clear the display, but if the underlying wiring or board fault is still present, the code will return. A reset does not repair a loose connector, damaged harness, or failed component. The root cause must be identified and corrected for the error to stay cleared.
How much does it cost to repair a Thermador cooktop showing E0116?
If the fix is simply reseating a connector, there may be no parts cost, though a technician's diagnostic and labor fee typically ranges from $100 to $200. If the wiring harness needs replacement, parts and labor combined can range from $150 to $350. A failed ADB or power board is the most expensive scenario, with total repair costs potentially ranging from $300 to $600 or more depending on parts availability and labor rates in your area.

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