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Error Code

JennAir Built-In Microwave 1D11 / 1D12 / 1D21 / 1D22 and Related Codes

Book a Repair (310) 622-9465
Published September 2, 2026 Updated October 17, 2026

Content status: Verified

Error code 1D11 / 1D12 / 1D21 / 1D22 …
Appliance Microwave
Quick answer

Twelve JennAir built-in microwave codes, including 1D11, 3D11, F01 and F1, are described as a temperature sensor, control or wiring problem.

Model compatibility: JennAir reuses codes across series and model years, so 1D11 / 1D12 / 1D21 / 1D22 … may mean something different on another appliance or generation. Confirm this against your model’s documentation and record your full model number before acting.

Plain language

What this code means

JennAir lists a possible Oven Temperature Sensor, Control or wiring problem.

The codes covered

  • 1D11 and 1D12, plus 1D21 and 1D22
  • 3D11 and 3D12, plus 3D21 and 3D22
  • F01 and F02, then F1, then F3E2

On JennAir’s built-in microwave pages these twelve share one wording: trouble may lie with the Oven Temperature Sensor, with the Control, or with the wiring connected to them.

Which of the three?

The sensor reports cavity heat to the control, which is the electronics acting on that report, and wiring connects the pair. JennAir lists all three together and offers no way to pick one from the display.

What you can do

  1. At the breaker panel, switch off the microwave’s breaker.
  2. Allow 60 seconds to pass.
  3. Restore the breaker.
  4. Remain nearby for a minute, watching for a repeat of the code.
  5. Make sure the microwave operates.

Code still there

Owners are given nothing further. If a code outlasts the reset, service is needed; leave the cabinet closed meanwhile.

Questions you might have

Do 1D and 3D indicate separate faults?

The built-in page words them identically, and what sets one number apart from the next is never explained.

Is the failing part identified?

No distinction is made; the three possibilities are listed side by side.

Related codes

  • F3E0: concerns the upper oven temperature sensor
  • F3T2: a convection thermistor code for over-the-range models
  • 1C4C and relatives: control and wiring only; no sensor appears

Microwave repair in Los Angeles

To book a visit, phone (310) 622-9465 and read out the exact code on the display, adding that you tried the breaker reset if you did. The microwave repair page has further detail.

Source: JennAir Product Help, Built-In Microwave Error Codes

Important safety warning. Do not attempt repairs involving electrical components, gas, water lines, refrigerant or sealed systems. Unplug the appliance if it is safe to reach the outlet, and leave internal diagnostics to a qualified technician.

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