LG Cooktop Error Code E2

The E2 error code means the cooktop has detected low line voltage on the incoming power supply. The unit monitors the voltage between L1 and L2 and expects a reading in the 208 to 240 VAC range. When voltage drops below the acceptable threshold, the cooktop halts operation and displays E2 to prevent component damage from sustained undervoltage.

No. The cooktop disables itself when E2 is active specifically to protect its internal electronics from damage caused by low voltage. Attempting to bypass or ignore this condition could damage the control board or heating components. Resolve the underlying electrical supply issue before resuming use.

The cost depends heavily on the root cause. If the issue is a faulty circuit breaker, replacement typically runs in the range of $150 to $300 including an electrician's labor. Wiring repairs or panel work can range from $200 to $600 or more depending on the scope. If the cooktop's control board is ultimately responsible, board replacement parts and labor generally fall in the range of $200 to $450.

Start by measuring the voltage between L1 and L2 at the cooktop's terminal block using a multimeter. If the reading is below 208 VAC, the problem is in your home's electrical supply, not the cooktop itself. Check the circuit breaker for a partial trip, inspect all wiring connections for looseness or corrosion, and contact your utility company if the supply voltage at the panel is also low. If voltage is within spec but the error persists, the control board may need to be evaluated.

A reset, such as turning the cooktop off and cutting power at the breaker for a few minutes, may temporarily clear the display, but the E2 code will return if the low voltage condition still exists. The fault is triggered by a real-time voltage measurement, so it will reappear each time the cooktop detects an undervoltage reading on L1 to L2.