Wolf Cooktop Error Code E43

E43 indicates that the temperature sensor circuit for Generator 1 has been detected as open by the cooktop control system. Generator 1 is associated with the right-side burners (R, RR, RC). Because the cooktop cannot receive valid temperature feedback, those burners are automatically shut down as a safety precaution. The fault points to either a wiring issue, a failed sensor, or a faulty generator board.

The cooktop automatically shuts down the affected burners when E43 is active, so those burners will not operate. Other burners on a separate generator may still function. Do not attempt to bypass the shutdown, as the cooktop is protecting against an unmonitored heating condition. Stop using the affected burners and arrange for service.

Repair costs depend on whether the issue is a wiring problem or a full generator board replacement. Wiring and connector repairs are generally less expensive, while a generator board replacement will include both the part cost and labor. Total repair costs typically range from $150 to $500 or more, depending on parts pricing and technician rates in your area.

Some preliminary checks, like inspecting the wiring harness for visible damage or reseating loose connectors, are within reach of a knowledgeable DIYer. However, the primary repair involves replacing the generator board, which requires disassembling the cooktop and working with electrical components. Most homeowners should have a qualified appliance technician handle this repair.

A power reset may temporarily clear the fault display, but E43 will return as soon as the control system re-detects the open sensor circuit during normal operation. The underlying hardware problem, whether the generator board, wiring, or sensor, must be corrected before the error will clear permanently. Resetting without repair is not a solution.