GE Cooktop Error Code Er20

Er20 indicates an internal electronic failure on the touch control board of your GE cooktop. The board's own diagnostic circuitry has detected a fault it cannot recover from. This code points directly to the touch board as the source of the problem rather than an external component or sensor.

A power reset by turning off the circuit breaker for one to two minutes may temporarily clear the display, but Er20 typically returns because the fault is internal to the touch board hardware. A reset does not repair damaged circuitry, so the error will reappear during normal operation until the board is replaced.

The cost of a replacement touch control board typically ranges from $80 to $200 depending on the specific cooktop model. If you hire a technician for the repair, labor costs generally add $100 to $200 on top of the parts cost. Doing the replacement yourself can keep the total expense toward the lower end of that range.

A knowledgeable DIYer who is comfortable disconnecting appliances from power and handling electronic components can replace the touch board. The repair involves disconnecting the unit, accessing the touch board, unplugging the wiring harness, and installing the replacement board. If the error persists after replacement, diagnosing the wiring harness or main control board is more complex and may warrant a professional technician.

It is not recommended to continue using the cooktop while Er20 is active. An internal touch board failure means the controls may not respond reliably, which could prevent you from adjusting or turning off burners as expected. Discontinue use until the faulty board is replaced to avoid any risk of uncontrolled heating.