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Error code reference

GE Cooktop Error Code 173

Display board CPU failure.

GE codesGE cooktop codes

Display board CPU failure.

First step from the service manual

Recycle power to the cooktop. If fault persists, replace display board.

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

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What 173 means on a GE cooktop

Error code 173 on a GE cooktop indicates a CPU failure within the display board. The display board contains the main microprocessor responsible for interpreting user inputs, controlling cooking zones, managing power levels, and communicating operational status. When the CPU encounters an unrecoverable fault, either through internal hardware failure, corrupted firmware, or a loss of stable voltage supply, it triggers this error code and halts normal cooktop operation.

The display board CPU can fail for several reasons. Transient voltage spikes from the power supply, such as those caused by grid fluctuations or nearby lightning activity, can damage or destabilize the microprocessor. Heat stress from prolonged operation or inadequate ventilation beneath the cooktop can also degrade board components over time. In some cases, the CPU fault is a soft error caused by a temporary glitch in the processor's memory or clock signal, which is why a power cycle is the recommended first diagnostic step.

If recycling power does not clear the fault, the display board itself has failed and requires replacement. This is not a component that can be repaired at the board level in a field service context. The board must be swapped out as a complete unit. Before replacing the board, it is worth confirming that the incoming line voltage to the cooktop is stable and within specification, as an unstable power supply could damage a new board as well.

Source: manufacturer service documentation.

Common causes of 173

  1. 01

    Display board CPU hardware failure

    Part replacement

    The microprocessor on the display board has failed due to age, heat stress, or component degradation. This is the most likely cause when the error persists after a power cycle.

  2. 02

    Transient voltage spike or power surge

    Part replacement

    A sudden spike in line voltage can corrupt or damage the CPU on the display board. Check whether the fault appeared after a storm, power outage, or electrical event in the home.

  3. 03

    Temporary CPU soft fault or memory glitch

    Wiring / connection

    The processor may have encountered a momentary error in its internal memory or clock signal. A full power cycle by cutting power at the breaker for at least 60 seconds can resolve this without any parts.

  4. 04

    Unstable or out-of-specification supply voltage

    Wiring / connection

    If the incoming line voltage to the cooktop is fluctuating or not within the required range, the display board CPU may fault repeatedly. Verify line voltage at the cooktop terminal block before replacing the board.

  5. 05

    Loose or corroded wiring connections to display board

    Wiring / connection

    Poor connections between the display board and the main wiring harness can cause intermittent power loss to the board, triggering CPU errors. Inspect all connectors at the display board for corrosion, looseness, or heat damage.

See the test procedure for each cause

Frequently asked questions about 173

What does 173 mean on a GE cooktop?
Error code 173 on a GE cooktop indicates a CPU failure on the display board. The display board's microprocessor controls user inputs, cooking zones, and power management, and this code means that processor has encountered a fault it cannot recover from on its own. The first step is to recycle power to the unit. If the code returns, the display board needs to be replaced.
Will resetting my GE cooktop clear error code 173?
A power reset can clear error code 173 if the CPU experienced a temporary soft fault. Turn off the cooktop at the circuit breaker and leave it off for at least 60 seconds before restoring power. If the error code returns after the reset, the fault is persistent and the display board will need to be replaced.
How do I fix error code 173 on a GE cooktop?
Start by cutting power to the cooktop at the circuit breaker for 60 seconds to perform a hard reset. If the fault clears and does not return, no further action is needed. If error 173 comes back after power is restored, the display board has failed and must be replaced as a complete unit, since the CPU is not serviceable at the component level in the field.
Is it safe to use my GE cooktop when error code 173 is displayed?
A display board CPU failure means the control system is not functioning normally, which makes it unsafe to continue operating the cooktop. Cooking zones may not respond correctly to commands or may not shut off as expected. Do not use the cooktop until the error has been resolved, either by a successful power reset or by replacing the display board.
How much does it cost to fix error code 173 on a GE cooktop?
If the error clears with a power reset, there is no parts cost involved. If the display board needs to be replaced, parts alone typically range from $80 to $250 depending on the specific cooktop model. Adding professional labor for diagnosis and installation, the total repair cost generally falls in the range of $150 to $400.

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