The short answer
The manufacturer's code list carries 3d31 for this oven without a meaning attached — the entry against it records where the code is displayed rather than what it signifies. This page will not invent one. What follows is what can honestly be said: how to clear a displayed code, what to observe while it is showing, and when to stop and have the code read against your model line.
Error codes
Reference| Code | Meaning |
|---|---|
| 3d31 | Location may vary. |
What you observe, and what to record
- The code is displayed and nothing else is obviously wrong — Worth recording exactly, because a code with no published meaning is identified by its behaviour.
- Whether the code is steady or intermittent — A fault that is present every time is far quicker to find than one that comes and goes, and the two are diagnosed differently.
- Whether the ${A} still does everything else it should — What still works narrows the search as effectively as what does not, and it is the question a technician asks first.
Causes, most likely first on this oven
- Not published for this code on this model line — Stated first because it is the honest answer: the manufacturer documents this code without a component, and guessing from a neighbouring code is how the wrong part gets fitted.
- A latched state rather than a failure — Second: codes that clear on a power interruption and stay away behave as transients whatever they are called.
- Something in the function that was running when it appeared — Third: what the appliance was doing narrows the circuit involved even when the code does not.
Check in this order, and why
- Write down what the appliance was doing when the code appeared — With no published meaning, this is the primary evidence and only you can collect it.
- Cut power for a minute and see whether it returns — Separates a latched state from a standing fault without any assumption about meaning.
- Note which functions still work — What still works narrows the search as effectively as a meaning would.
What an owner can safely check
- Cut power at the breaker for about a minute and restore it — The safe first move for any displayed code, and the one that tells you whether it is transient.
About 5 min
- Photograph the display with the code showing — Codes are easy to transcribe wrongly and a photograph is not. It also timestamps the fault, which matters if it becomes intermittent.
About 5 min
- Keep a short log of when the code appears — Date, what the oven was doing, and how long it had been running. Two entries make a pattern; one does not.
About 5 min
- STOP HERE — do not fit parts on a guess — A code with no published meaning is not a parts list, and a neighbouring code is not evidence.
Before you open anything
Safety
Unplug the appliance or switch off its breaker before removing any panel — a capacitor can hold a charge after the power is off. Never wedge, tape or defeat the door latch or the door switch to get the cavity open: those two parts are what keep the element and the lock in a safe state. A cavity that has just been at temperature stays hot long after the display goes dark.
When to call a technician
Call once the code survives a power interruption, or as soon as a function you need has stopped working. Give the technician the full model number: this code is documented for the Jenn-Air range without a published meaning in the general index, and the model-line service documentation is where the answer actually lives.
Nearest Jenn-Air oven codes
What this page does not cover
This page reads 3d31 for Jenn-Air ovens in general, from the manufacturer's shared code index. A code can be documented differently for one family, so where a model-line page exists for your unit it is the more specific answer and is linked below. Not here: wiring colours, connector positions and part numbers, which differ by family.
Links: - [Jenn Air Oven Error Codes](/blog/jenn-air-oven-error-codes)
Where to go next
Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
