Short answer first
5Ab is not a fault. Jenn-Air documents it as Sabbath Mode being enabled, which sets the oven to remain on in a Bake setting until it is turned off. If nobody in the household meant to turn it on, the use-and-care guide for your model shows how to leave the mode.
Error codes
Reference| Code | Meaning |
|---|---|
| 5Ab | The Sabbath Mode is enabled. Sabbath Mode sets the oven to remain on in a Bake setting until turned off. |
What you observe
- The oven stays on in Bake — As documented, it keeps baking until it is turned off rather than ending by itself.
- The mode appeared without anyone choosing it — A long press while wiping the control panel can select a mode by accident on some models.
- The oven light stays as it was — On some models the light is held in its current state during the mode.
- NEAR MISS: a code with a fault meaning — Codes whose documented meaning names a part or a condition report a fault; this one reports a mode.
Causes, most likely first
- Someone selected it on purpose — Ranked first because 5Ab reports a setting rather than a fault, and a setting is most often on because someone chose it.
- It was left on after it was needed — The mode stays on until it is turned off, so it can outlast the day it was set for.
- A key held during panel cleaning — Pressing and holding keys while wiping the panel can enter a mode on some models.
What to check first, and why
- Ask the household first — If someone set the mode deliberately, leave it until it is no longer needed.
- Find the exit steps for your model — The use-and-care guide shows how to leave Sabbath Mode; the key sequence varies by model.
- Check whether the oven is heating — Look for a heating indicator on the display, or warm air at the vents.
What an owner can safely do
- Leave the mode as the guide shows — Use the key sequence in the use-and-care guide for your model to turn Sabbath Mode off.
Tools: use-and-care guideAbout 2 min
- Turn the oven off — Once out of the mode, make sure the oven is off and no longer heating.
About 1 min
- Confirm the display is back to normal — The time or the usual standby display should return.
About 1 min
- Stop here if the oven will not leave the mode — If neither the documented steps nor a power cycle work, leave the oven off at the breaker and arrange service.
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. In Sabbath Mode the oven keeps heating until it is turned off, so keep the cavity clear of anything that could scorch and confirm it is off once the mode is no longer needed. Let the cavity and any surface units cool fully before reaching in or behind them.
When to call a technician
5Ab itself never needs a service call. Call only if the oven will not leave Sabbath Mode by the documented steps or after a power cycle, or if the mode keeps turning itself on.
Neighboring Jenn-Air oven codes
Generalized information
This is the generalized reading of 5Ab across the Jenn-Air oven line. It applies to Jenn-Air ovens with Sabbath Mode whose display shows 5Ab for it. It does not apply to fault codes, ovens without Sabbath Mode, and models that use 5Ab differently, and the same characters can mean something else on another brand. Where a model-specific page exists for your model line, it is the more specific answer and comes first.
Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
