E118Bosch Oven — Bosch Oven E118 Error Code

E118 on Bosch gas ovens means the oven attempted to ignite the burner multiple times but the flame sensor (thermocouple) did not confirm a stable flame. Root causes include a weakened or dirty igniter that cannot generate enough current to fully open the gas safety valve, a dirty or misaligned electrode, a failed flame sensor/thermocouple that cannot confirm the flame even when it lights, or an interrupted gas supply. Repeated failed ignition attempts can allow small amounts of unburned gas to accumulate — ventilate the area before troubleshooting.

Ensure the gas supply is on and other gas appliances in your home are working. Ventilate the kitchen. Inspect the igniter and burner electrode for visible damage, cracks, or carbon buildup — clean gently with a soft brush. Allow 5 minutes before attempting to relight to clear any accumulated gas. Test the igniter by measuring its resistance or observing its glow: a healthy igniter should glow bright orange within 30–60 seconds and draw 3.2–3.6 amps. A weak glow or slow response indicates replacement is needed (part 00754176). If the igniter is good, the flame sensor or gas valve may have failed.