In one paragraph
What 3d22 tells you is that the reading arriving from the oven temperature sensor or the control and the wiring between them fell outside the band the control is built to trust. The machine protects itself by refusing to heat on an unverified reading, which is why the cycle ends early.
What this code is documented as meaning
Reference| Code | Documented meaning |
|---|---|
| 3d22 | There may be a problem with the Oven Temperature Sensor, the Control, or the associated wiring. |
The behaviour that comes with this code
- The appliance runs longer than it used to for the same result — A reading that is drifting rather than failing stretches every cycle before it ever raises a code.
- The fault follows the weather or the time of day — A cold kitchen and a hot one put a marginal probe on opposite sides of its limit, which is why some of these arrive seasonally.
- NEAR MISS - nothing heats and no code shows at all — That is a power or element fault rather than a reading fault, and it belongs on the page for that symptom.
The ranked causes behind this reading
- A loose or corroded connector at the sensor — Ranked first because it is the failure that needs no part: the probe is fine, the joint carrying its signal is not, and heat cycling at the back of the cavity is what works a pin loose.
- The board input itself — Last, and deliberately last: an input stage fails far less often than the circuit in front of it, and replacing it first is the expensive way to find out the connector was loose.
The order to work through it
- Power the machine down fully and see whether the code returns — Costs nothing and separates a latched one-off read from a live fault.
- Look at the connector at the sensor before anything is measured — Seated, clean and tight is a five-second answer to the most likely cause.
The owner-side procedure
- Clear the code with a full power-down — A code that does not return was a single bad read.
About 5 min
- Let the cavity reach room temperature before anything else — A hot resistance reading means nothing, and a hot cavity is the reason half of these codes cannot be diagnosed on the spot.
About 45 min
- STOP HERE if the next step is a meter across the probe terminals — That means a panel off and a connector back-probed, which is where an owner check ends and a service call begins.
Before you open anything
Safety
Safety line for this appliance: unplug it or switch off its breaker before removing any panel, and remember a capacitor can hold a charge after the power is off. Interlocks and switches stay as fitted.
When to call a technician
Call once the code survives a full power-down: a repeatable reading fault is a probe, a harness or a board, and telling those three apart needs a meter and the resistance table for that model line. There is one case that does not wait for any of that.
Neighbouring codes on this appliance
What this page does not cover
Scope, stated plainly: the model lines that use this probe on this cavity, and this code only. The index linked below lists the pages for specific families and models where they exist, and a page about your model outranks this one.
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