Error code reference

Bosch Range Error Code E303

Electronics Delta temperature too high: temperature sensor on the control module detects temperature changes that over time are higher than limit value; control turns off heating elements and fan defaults to high speed.

SourceBosch Benchmark Induction Range - Service Manual (HIIP054C, HIIP054U)p. 30

Bosch codes Bosch range codes

Diagnostic procedure

The full E303 procedure

Step 1 is visible so you can confirm you are on the right page. The remaining steps, the ones that tell you whether to actually replace a part, unlock with any pass.

MyPros+ · DiagnosticsStep 1 preview

First diagnostic step

Check connections to cooling fan and to control module (see Small Load Schematic). Check element operation. Check for air obstruction or damaged upper/lower ventilation trims. Check for stuck relays.

SourceBosch Benchmark Induction Range - Service Manual (HIIP054C, HIIP054U)p. 30

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More steps, wiring diagram references, and verified part numbers

Includes expected resistance and voltage values, connector pinouts, and supersession notes for replacement parts.

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Where this code is documented

4 manuals in the MyPros+ library document this code for Bosch range.

Models covered by the manuals that document this code

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The full E303 procedure

Where this code is documented

Models covered by the manuals that document this code

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