mypros+
Error code reference

Frigidaire Cooktop Error Code E73

Improper voltage output from filter board in the 3 cook zone induction module (same as E33).

Frigidaire codesFrigidaire cooktop codes

Improper voltage output from filter board in the 3 cook zone induction module (same as E33).

First step from the service manual

Test all cables and connections on filter circuit board in the 3 zones induction module.

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

MyPros+ Max

Get the full diagnostic procedure for E73.

  • Step-by-step tests with expected resistance, voltage, and continuity values
  • Wiring diagram references and connector pinouts from the OEM service manual
  • Verified part numbers when replacement is required
Get the full procedure

$29/month · Cancel anytime · Or $9.95 3-day pass

What E73 means on a Frigidaire cooktop

The E73 error code on a Frigidaire induction cooktop indicates that the filter circuit board within the 3-cook-zone induction module is producing an improper voltage output. The filter board is a critical component of the induction power supply system. It conditions and regulates the electrical signal before it reaches the induction coils, and when its output voltage falls outside the expected operating range, the control system detects the fault and triggers this code. Functionally, E73 is equivalent to the E33 fault code, meaning both codes point to the same underlying problem within the same module.

The most common starting point for diagnosing E73 is a thorough inspection of all cables and connections associated with the filter circuit board inside the 3-zone induction module. Loose, corroded, or damaged connector pins can interrupt proper voltage delivery and cause the control board to read an out-of-range signal. Beyond connection issues, a failed or degraded filter board itself can produce abnormal voltage output, as can damage to the wiring harness that links the filter board to other components within the module.

Because this fault involves the induction power circuitry, diagnosis typically requires a multimeter to verify voltage levels at the filter board output and to check continuity across connectors and wiring. Technicians should inspect the connector housings for heat damage or discoloration, which can indicate a sustained electrical fault. If connections test sound but the fault persists, replacement of the filter board or the full 3-zone induction module may be required.

Source: manufacturer service documentation.

Common causes of E73

  1. 01

    Loose or disconnected cables on the filter board

    Wiring / connection

    Connectors linking the filter circuit board to the 3-zone induction module can work loose over time due to vibration or heat cycling. Inspecting and reseating all cable connections on the filter board is the required first diagnostic step.

  2. 02

    Corroded or damaged connector pins

    Part replacement

    Corrosion or physical damage on connector pins can cause high resistance or an open circuit, resulting in improper voltage readings. Look for discoloration, pitting, or bent pins at each connector on the filter board.

  3. 03

    Failed filter circuit board

    Part replacement

    If the filter board itself has a failed component internally, it will produce a voltage output outside the acceptable range regardless of connection quality. A failed board typically requires replacement.

  4. 04

    Damaged wiring harness

    Part replacement

    The wiring harness connecting the filter board to other parts of the induction module may have chafed, burnt, or broken wires. A continuity check along the harness can identify any open or shorted conductors.

  5. 05

    Faulty 3-zone induction module

    Part replacement

    In cases where the filter board and wiring both test correctly, the broader 3-zone induction module may be defective. This would require module-level replacement to resolve the fault.

See the test procedure for each cause

Frequently asked questions about E73

What does E73 mean on a Frigidaire cooktop?
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.
Can I fix E73 on my Frigidaire cooktop myself?
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.
Is it safe to use my cooktop while E73 is displayed?
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.
Will resetting the cooktop clear the E73 error?
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.
How much does it cost to repair an E73 error on a Frigidaire cooktop?
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.

Related Frigidaire cooktop codes

All Frigidaire cooktop codes
View all 60 Frigidaire cooktop codes

78,000+ service manuals · 160,000+ error codes · 55+ brands

Get Started

$29/month · Cancel anytime · Or $9.95 3-day pass