Short answer first
Jenn-Air documents E13 as the oven failing to preheat correctly, with the appliance control board or its wiring named as the likely source. If it heats after a reset, cook attended with a separate thermometer; if preheat fails again, it needs service.
Error codes
Reference| Code | Meaning |
|---|---|
| E13 | The oven did not pre-heat correctly. There may a problem with the Appliance Control Board or the associated wiring. |
What you will notice
- Food takes far longer than the recipe says — Under-heating shows up as pale, undercooked results before anyone notices the code.
- The fan runs but the air stays cool — Air moving without heat points at the heating side rather than the fan.
- The oven is warm but not hot — The cavity heats a little, which suggests one heat source working and another not.
- NEAR MISS: the oven reaches temperature but food still cooks badly — That is calibration, rack position or cookware, not a preheat failure.
Causes, most likely first
- The appliance control board — Ranked first because the documented meaning for E13 names the appliance control board: the board decides when heat is applied, and a board that does not switch it on correctly fails preheat.
- Half the supply missing — A double breaker tripped on one side can leave the display alive while heating runs weak or not at all.
- Wiring or a terminal between board and element — A burnt terminal at the element or an open wire carries no current, so the element stays cold even though it is sound.
Check in this order
- Confirm the breaker is fully on — Switch it fully off and on; one tripped side of a double breaker gives weak heating with a live display.
- Reset and retry one preheat — A single attended preheat after a power cycle shows whether the failure repeats.
- Watch which heat source works — Where elements are visible, note whether bake and broil each glow; a cold one is the lead.
Reset and owner-safe checks
- Reset the breaker fully — Switch the oven breaker hard off and back on.
About 2 min
- Power-cycle the control — Leave the breaker off for a few minutes before switching back on, then set the clock if asked.
About 5 min
- Run one attended preheat — Set a moderate bake temperature and watch for the ready signal; where the elements are visible, note which ones glow.
Tools: oven-safe thermometerAbout 30 min
- Stop here if the next check needs a meter — Testing a part or its wiring means live terminals or disassembly, which is technician work.
Safety first
Safety
Unplug the appliance or switch off its breaker before removing any panel. A capacitor can hold a charge after the power is off. An element that has split or blistered can arc; never touch an element or its terminals with the oven powered.
Reset or service call?
Call for service if E13 returns on a second attended preheat after the breaker has been reset, or straight away if an element sparks, blisters or glows unevenly. Testing the element and the board output takes meters and panels off, which is technician work.
Neighboring Jenn-Air oven codes
Scope of this code reading
What this covers: E13 as Jenn-Air documents it for Jenn-Air ovens whose code list carries E13 as a preheat failure. What it does not cover: overheat codes, cooktop codes, and models that give E13 a different reading, or the wiring colors, part numbers and test values of any one model. A model-specific page for your unit, where one exists, outranks this general reading.
Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
