Error code reference

Bosch Oven Error Code E123

Cavity 1 meat probe sensor temperature too low

Cavity 1 meat probe sensor temperature too low — measured temperature of probe is lower than allowable limit; oven will stop heating until probe is removed.

First step from the service manual

Check with customer to determine if probe was used in frozen food; check probe operation and resistance; check for loose connections and/or pinched wires.

The complete diagnostic procedure includes additional test steps, resistance specifications, wiring diagram references, and component test points.

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Step-by-step tests with expected resistance, voltage, and continuity values
Wiring diagram references and connector pinouts from the OEM service manual
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E123 on my Bosch Oven

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Cavity 1 meat probe sensor temperature too low

From Service Manual 973944, p.36:

1.Check with customer to determine if probe was used in frozen food; check probe operation and resistance; check for loose connections and/or pinched wires.

2.Measure control board supply voltage at the test points. Expected: 12 VDC and 5 VDC; a drop below 4.75 VDC on the logic rail points to a failed onboard regulator.

3.Inspect all connectors on the main control for corrosion, thermal stress, or backed-out pins. Reseat each connector with the power disconnected.

Part 00705047

Control module

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First step from the service manual

Get the full diagnostic procedure for E123.

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