Frigidaire Cooktop Error Code E73

E73 indicates an improper voltage output from the filter circuit board inside the 3-cook-zone induction module. This code is functionally the same as E33 and points to a fault within the induction power filtering system. The cooktop has detected that the filter board's voltage output is outside the expected operating range. This can be caused by loose connections, a damaged wiring harness, or a failed filter board.

No, you should not continue using the cooktop while E73 is active. The error indicates a fault in the induction power circuitry, which means the affected cooking zones may not function correctly or at all. Operating the cooktop with a known electrical fault in the induction module could worsen the damage or create a safety hazard.

Repair costs vary depending on what component has failed. If the issue is simply a loose connector, cost may be limited to a service call fee, typically in the range of $75 to $150. Replacing a filter circuit board or induction module will add parts costs, which can range from $150 to $400 or more depending on the specific model and parts availability. Labor charges will increase the total if a technician performs the repair.

A knowledgeable DIYer can start by checking all cable connections on the filter circuit board in the 3-zone induction module, which is the first recommended diagnostic step. However, accessing the induction module requires disassembling the cooktop, and working near induction power components carries a serious shock risk. If the issue goes beyond a loose connection and involves a failed board or wiring harness, professional repair is strongly recommended.

A reset may temporarily clear the error code display, but if the underlying fault with the filter board or its connections has not been corrected, the E73 code will return once the cooktop attempts to operate. A reset alone is not a fix. The filter board connections and wiring must be inspected and any defective components must be replaced before the code will clear permanently.