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Error code reference

Thermador Cooktop Error Code E0114

Left ADB communication error or poor quality communication between the induction modules.

Thermador codesThermador cooktop codes

Left ADB communication error or poor quality communication between the induction modules.

First step from the service manual

See Checklist E0114-E0314 flowchart; check wiring between PB and ADB boards.

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

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  • Wiring diagram references and connector pinouts from the OEM service manual
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What E0114 means on a Thermador cooktop

Error code E0114 on a Thermador induction cooktop indicates a communication fault originating from the left ADB (Appliance Distribution Board). The ADB serves as a control and communication hub for the induction modules, coordinating power delivery and operational data across the cooktop's zones. When the main PB (Power Board) cannot establish reliable communication with the left ADB, or when the signal quality between these boards falls below an acceptable threshold, the cooktop logs E0114 and may disable affected cooking zones to prevent uncontrolled operation.

The root cause is typically found in the wiring harness that connects the PB and ADB boards. Loose connector pins, damaged insulation, or corroded terminals can all introduce resistance or signal noise into the communication line, resulting in poor quality data transmission. In some cases, the fault may also stem from a failure within the ADB itself, where internal circuitry responsible for sending or receiving communication signals has degraded or failed outright.

Diagnosis should follow the Checklist E0114-E0314 flowchart specific to this cooktop series. The first physical step is a thorough inspection of all wiring between the PB and ADB boards, checking for secure seating at both connector ends, visible wire damage, and any signs of heat stress or moisture intrusion. If wiring checks out, the boards themselves should be evaluated for faults.

Source: manufacturer service documentation.

Common causes of E0114

  1. 01

    Loose or disconnected wiring connectors

    Wiring / connection

    The connectors linking the PB and ADB boards can work loose over time due to vibration or thermal cycling. A connector that is not fully seated will interrupt or degrade the communication signal, triggering E0114.

  2. 02

    Damaged wiring harness

    Part replacement

    Wires routed between the PB and ADB boards may suffer insulation damage from heat exposure or physical abrasion. Damaged insulation can cause shorts or signal interference that registers as a communication error.

  3. 03

    Corroded or contaminated connector pins

    Wiring / connection

    Moisture or grease intrusion into the board connectors can cause pin corrosion, increasing resistance in the communication circuit and producing intermittent or consistently poor signal quality.

  4. 04

    Faulty left ADB board

    Part replacement

    If wiring and connectors test acceptable, the left ADB itself may have an internal failure affecting its communication circuitry. In this case, the board will need to be replaced.

  5. 05

    Faulty PB (Power Board)

    Part replacement

    Less commonly, the PB may be unable to properly send or receive communication signals to the ADB due to an internal fault. This is typically ruled out after the ADB and wiring have been eliminated as causes.

See the test procedure for each cause

Frequently asked questions about E0114

What does E0114 mean on a Thermador cooktop?
E0114 indicates a communication error or poor quality communication between the left ADB (Appliance Distribution Board) and the main PB (Power Board) inside the cooktop. These two boards must exchange data continuously to operate the induction zones correctly. When that communication fails or degrades, the cooktop logs this code and may disable affected zones. Diagnosis starts with inspecting the wiring between these two boards.
Can I fix E0114 myself, or do I need a technician?
A knowledgeable DIYer comfortable working inside appliances can check for loose connectors and visible wiring damage after disconnecting power to the unit. However, diagnosing a faulty ADB or PB board requires following the manufacturer's specific diagnostic flowchart for codes E0114 through E0314, and board replacement requires handling high-voltage induction components. For most homeowners, a qualified technician is the safer choice.
Is it safe to keep using my cooktop when E0114 is displayed?
It is not recommended to continue using the cooktop while E0114 is active. A communication fault between control boards means the cooktop cannot reliably manage power to the induction zones, which could result in unpredictable behavior. The affected zones may simply stop working, but operating the unit in a fault state risks additional damage to the boards or wiring.
Will resetting the cooktop clear the E0114 error?
A power reset by turning off the circuit breaker for 30 to 60 seconds may temporarily clear the code if the fault was caused by a transient signal glitch. However, if there is an underlying hardware problem such as a damaged wire, corroded connector, or failing board, the error will return once the cooktop is powered back on and attempts to establish communication between the boards.
How much does it cost to repair a Thermador cooktop showing E0114?
Repair costs vary depending on the root cause. If the fix is simply reseating a loose connector, you may only pay for a diagnostic service call, typically in the range of $75 to $150. If a wiring harness needs replacement, expect parts and labor to run $150 to $350. Replacing an ADB or PB board on an induction cooktop can bring total costs to $300 to $700 or more, depending on parts availability and local labor rates.

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