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Error code reference

Thermador Cooktop Error Code E0133

Left ADB error checking induction module component: induction hob configuration relay

Thermador codesThermador cooktop codes

Left ADB error checking induction module component: induction hob configuration relay — unable to properly connect the inductor to the assigned inverter.

First step from the service manual

Make sure that the inductors are properly connected to the ADB in question.

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

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What E0133 means on a Thermador cooktop

Error code E0133 on a Thermador induction cooktop indicates a fault within the left ADB (Advanced Distribution Board) related to the induction hob configuration relay. Specifically, the control system has detected that it is unable to properly connect the inductor to its assigned inverter circuit. The configuration relay is responsible for routing power from the inverter to the correct inductor coil, and when this relay fails to establish or maintain that connection, the ADB logs the E0133 fault and disables the affected zone to prevent unsafe operation.

The ADB serves as the communication and power distribution hub between the main control board and the individual induction modules. Each inductor zone relies on the ADB to correctly assign it to an inverter, which then drives the high-frequency alternating current needed to generate the electromagnetic field for cooking. A failure in this relay-to-inverter pairing can stem from loose or improperly seated wiring harness connections between the inductors and the ADB, a faulty configuration relay on the ADB itself, or a defective induction module.

The first diagnostic step is to inspect all wiring connections between the left-side inductors and the ADB. Connectors that are partially unseated, corroded, or damaged can interrupt the relay circuit and trigger this fault. If connections are secure and the fault persists, the ADB board or the induction module may need to be tested further or replaced.

Source: manufacturer service documentation.

Common causes of E0133

  1. 01

    Loose or disconnected inductor wiring harness

    Wiring / connection

    The wiring connectors between the left-side inductors and the ADB may be partially unseated or disconnected. This is the first item to check, as even a slightly loose connector can prevent the configuration relay from completing its circuit.

  2. 02

    Faulty configuration relay on the ADB

    Part replacement

    The relay on the ADB that routes the inductor to the assigned inverter may have failed electrically. If connections are confirmed secure but the fault persists, the ADB itself may need testing or replacement.

  3. 03

    Defective induction module

    Part replacement

    The induction module for the affected left-side zone may be internally faulty, preventing the ADB from establishing a proper inverter assignment. A failed module can produce this relay communication error.

  4. 04

    Corroded or damaged connector pins

    Wiring / connection

    Corrosion or physical damage on the harness connector pins at the ADB or inductor can cause intermittent or failed relay connections. Inspect pins visually and check for discoloration or debris.

See the test procedure for each cause

Frequently asked questions about E0133

What does E0133 mean on a Thermador cooktop?
E0133 indicates that the left ADB (Advanced Distribution Board) has detected an error with the induction hob configuration relay. The system is unable to properly connect the inductor on the left side to its assigned inverter. This causes the affected burner zone to stop functioning. The fault must be diagnosed by inspecting wiring connections and potentially testing or replacing the ADB or induction module.
Can I fix E0133 on my Thermador cooktop myself?
The first diagnostic step, checking that the inductor wiring connectors are properly seated on the left ADB, is something a technically inclined person comfortable working inside appliances may be able to perform. However, accessing the ADB and internal components requires disassembling the cooktop and working near high-voltage parts. If the wiring connections are secure and the fault remains, replacing the ADB or induction module should be done by a qualified technician.
Is it safe to use my Thermador cooktop while E0133 is active?
You should not attempt to use the affected left-side induction zone while E0133 is active. The cooktop has flagged that it cannot properly control the inductor-to-inverter connection on that side, which means the zone may not operate predictably. Other unaffected zones may still function, but continued use of the faulty zone should be avoided until the fault is resolved.
Will resetting the cooktop clear the E0133 error?
A power reset by turning off the circuit breaker for 60 seconds may temporarily clear the error code, but if the underlying cause is a loose connector, a failed relay, or a defective component, the fault will return during the next use cycle. A reset alone is not a repair. The root cause must be identified and corrected for the error to clear permanently.
How much does it cost to repair E0133 on a Thermador cooktop?
Repair costs vary depending on the cause. If the fix is simply reseating a wiring connector, labor costs for a service call typically range from $100 to $200. If the ADB or induction module needs replacement, parts alone can range from $150 to $500 or more depending on availability, with total repair costs including labor potentially reaching $300 to $700 or higher. Getting a diagnostic quote from a certified technician before committing to repairs is recommended.

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