Bosch built-in microwaves use door-latch sensors, temperature probes, and control electronics that report faults through E and ER codes. Codes like E3 (door system) and ER1 (temperature sensor) are common and generally safe to schedule normally, while ER4 (extreme overheating) should stop use immediately until inspected.
Because built-in microwaves are integrated into cabinetry, our technicians are experienced working in tight, built-in installations without damaging surrounding cabinetry or trim kits.
Common Microwave Problems
Microwave shuts off partway through cooking
Door won't latch or won't release
Display shows an E or ER code
Turntable won't rotate
Unusual arcing or sparking inside the cavity
No heat, but the display and fan work normally
Microwave Error Codes
Recognize a code on your display? Look it up before you unplug anything or attempt a repair.
E2
Bosch Microwave E2 Error Code
E3
Bosch Microwave E3 Error Code
E11
Bosch Microwave E11 Error Code
E17
Bosch Microwave E17 Error Code
ER1
Bosch Microwave ER1 Error Code
ER4
Bosch Microwave ER4 Error Code
ER11
Bosch Microwave ER11 Error Code
Popular Bosch Microwave Models
Why Trust Us With Your Bosch Microwave
- Factory-trained on Bosch microwave control systems and diagnostics.
- Genuine OEM parts stocked for the most common failures.
- Upfront flat-rate pricing, approved by you before we start.
- 30-day workmanship warranty on every repair. Parts may carry the manufacturer's warranty where applicable.