E005 — Power Supply / Line Voltage Fault

How to fix it

1. Power off at the breaker.
2. Measure both legs to neutral and across hot-to-hot at the oven junction box — expect 240 V (208 V on some commercial supplies).
3. Inspect the breaker and reseat it; replace if one pole reads dead.
4. Confirm the oven is wired per the install diagram on the chassis — 3-wire vs 4-wire matters.
5. Tighten all lugs at the junction box; check for burned insulation.
6. If supply is correct and code persists, replace the power inlet/terminal block; last resort, replace the main control.

Why it happens

Typical signs: Display works but oven won't heat · Lights and clock function but cooking fails · E005 immediately at power-up · Breaker trips during preheat

• Missing 240 V leg at the supply Loose lug at the breaker or oven junction box delivers only 120 V.
• Wrong wiring at install Hot-to-hot vs hot-to-neutral swap on a 3-wire vs 4-wire conversion.
• Failed breaker One pole of the double-pole breaker is dead.
• Brownout or low line voltage Utility delivering below 200 V.
• Damaged power inlet on the oven Burned terminal block at the rear of the oven.

Parts you may need

If diagnosis points to a failed part, these are the common replacements. As an Amazon Associate we earn from qualifying purchases.

• Bosch oven terminal block Common replacement
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