GE Cooktop Error Code 174

Error code 174 on a GE cooktop indicates a BV supply failure detected by the display board. The "BV" designation refers to the board voltage supply, meaning the display board is not receiving or is unable to regulate the correct operating voltage it needs to function. The display board serves as the primary control interface, managing user input, burner activation signals, and communication with other components in the cooktop system. When the voltage supply to this board falls outside acceptable parameters, the unit registers this fault to prevent unsafe or erratic operation.

This type of fault can originate from within the display board itself if internal voltage regulation components have failed, or it can stem from the incoming power supply line feeding the board. A transient power surge or brief interruption in household current can sometimes trigger a false BV supply fault, which is why the first diagnostic step is a power recycle. Cutting power at the breaker for 60 seconds allows the board to fully discharge and reset its fault registers.

If the fault returns after recycling power, the display board itself is the primary suspect. Internal failures such as a degraded voltage regulator, failed capacitor, or damaged power trace on the board can all produce a persistent BV supply fault. Because the fault is self-reported by the display board, it is difficult to isolate the root cause further without replacing the board and observing whether the fault clears, making board replacement the definitive corrective action when power cycling does not resolve the issue.