Bosch Range E118 Says the Oven Cannot Read Its Temperature

What E118 means

If baking comes out undercooked or the oven refuses to hold a temperature, E118 may be the reason. The control cannot get a usable reading from the oven's temperature sensor, so it has no way to judge how hot the cavity really is. It is the same sensor-reading problem Bosch wall ovens report, and the part involved sits inside the oven rather than on the cooktop.

Common causes of E118

Temperature sensor that has stopped working
Sensor wire that is damaged, pinched or no longer plugged in
Control board that cannot process the sensor signal correctly (check last, after the sensor and wiring)

✓ One safe check you can try

There is no safe homeowner test for E118. Checking a sensor circuit means measuring resistance on a range with power fully removed. 1. Switch the range off at the breaker. 2. Do not pull the range out or reach behind it. 3. Jot down whether the oven heats at all, runs cold or overshoots, and tell us when you book.

! Why to stop there

A multimeter test belongs on a de-energized range, and pulling out a heavy range on a gas line adds its own hazards.
Replacing the board when only the sensor or its plug is bad costs far more than the real repair.
Probing the sensor connector with the wrong tool can bend pins and create a new problem.

Opening a panel yourself does not automatically cancel a manufacturer warranty, but it can cause accidental damage, and some manufacturers set their own service conditions. Check your warranty terms, or ask us, before deciding.

→Same appliance

Other Range codes

F91Bosch Range F91 Means the Unlock Attempts Ran Out F92Bosch Range F92: Oven Believes the Door Is Open F93Bosch Range F93 Is the Lock-Side Twin of F90 F94Bosch Range F94: Door Lock Attempts Exhausted F12Bosch Range F12: Control Module Cannot Recognize Its Own Processor F13Bosch Range F13 Signals Corrupted Stored Settings F30Bosch Range F30: Reading 1080 to 1110 Ohms on the Oven Sensor F31Bosch Range F31, the Shorted Twin of F30

E118E118 questions

Does E118 stop my burners from working?

No. The error is limited to the oven cavity's temperature sensing, so the cooktop is not involved. It also does not mean the oven is unsafe to be near, only that it cannot judge its own temperature.

Is this a costly repair compared with other range problems?

It is one of the more routine ones, since a sensor is a small, replaceable part. You get a written price before any work. That makes it a good candidate for a one-visit fix when the part is on the truck.

Can I use the oven in the meantime?

We would not rely on it. Without a reading, the control cannot regulate heat, so food may cook unevenly and temperatures may drift. If you must, use an oven thermometer and stay in the kitchen, but a proper repair is better.