E4
RCA
Oven Over-Temperature or High-Limit Trip
Display shows E4 and oven may shut off or fail to reach set temperature.
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Blocked oven vents, Failed high-limit thermostat, Stuck relay on control board, Incorrect installation causing poor airflow
How to Fix / Troubleshooting
Safety first: Turn off power and allow the appliance to cool fully.
- Check ventilation: Ensure there is proper clearance around the range per the installation manual. Remove any items blocking rear or top vents.
- Inspect high-limit thermostat: Access the high-limit thermostat (often mounted on the rear of the oven cavity). Test for continuity when cool. If open and non-resettable, replace it.
- Control relay: If the oven overheats because the element stays on constantly, the bake or broil relay on the control board may be stuck. Replace the electronic oven control board.
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Repair Difficulty
Hard
4/5
Required Part
High-Limit Thermostat
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