Bosch Dryer Error Code E:18

E:18 is an informational code stored in the dryer's error memory indicating that the water handling system detected an extended flushing time, which points to a full or clogged lint filter. The control board measures flushing duration directly and logs this entry when the time exceeds normal limits. It is not a hard fault, meaning the dryer may continue to operate, but the lint filter should be cleaned promptly to maintain efficiency.

Because E:18 is stored as an entry in the error memory rather than an active fault, a reset may clear the log entry temporarily. However, if the lint filter or drainage system is not cleaned, the code will be logged again once the next flushing cycle exceeds the acceptable time threshold. Address the root cause before relying on a reset.

In most cases there is no repair cost at all, since E:18 is resolved by cleaning the lint filter and possibly the condenser, both of which are routine maintenance tasks. If the code persists after thorough cleaning and the drain pump requires replacement, parts and labor costs typically range from around $100 to $300 depending on the specific model and service location.

Start by removing and thoroughly cleaning the lint filter, which is the most common cause of this code. Also check and clean any secondary fine filter or condenser unit accessible in the dryer. After cleaning, run a cycle to confirm flushing times return to normal and the informational entry does not recur.

E:18 is classified as an informational code, not a safety-critical fault, so the dryer can typically continue to operate. That said, running the dryer with a severely clogged lint filter reduces efficiency, increases cycle times, and puts additional stress on internal components like the drain pump. Cleaning the filter as soon as possible is strongly recommended.