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Error code reference

Bosch Dryer Error Code E:17

Water handling system

Bosch codesBosch dryer codes

Water handling system - lint trap full error (source can be time counter or full detection). Not an error, information in error memory.

First step from the service manual

Check / Clean lint filter.

The complete diagnostic procedure includes additional test steps, resistance specifications, wiring diagram references, and component test points.

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What E:17 means on a Bosch dryer

E:17 on a Bosch dryer is a water handling system notification related to the lint trap. Unlike a hard fault that stops operation, this code is logged as informational data in the dryer's error memory rather than a disabling error. The control board tracks lint filter status using either a time-based counter, which triggers after a set number of drying cycles, or a physical detection sensor that monitors airflow restriction caused by lint accumulation.

The lint trap is a critical component in the water handling system of Bosch condensation and heat pump dryers. When lint builds up on the filter, it restricts airflow through the drum and into the condenser unit. Reduced airflow causes moisture to be handled less efficiently, increasing drying times and thermal load on internal components. The E:17 code is the control system's way of flagging that the lint filter needs attention before these performance issues worsen.

The most direct cause is simply a lint filter that has not been cleaned after one or more drying cycles. On condenser-style dryers, a secondary cause can be lint that has bypassed the primary filter and accumulated on the condenser fins themselves. Regular cleaning of the lint filter after every cycle, along with periodic cleaning of the condenser unit, will prevent this notification from recurring. No component failure is implied by E:17 in most cases.

Source: manufacturer service documentation.

Common causes of E:17

  1. 01

    Lint filter not cleaned after recent cycles

    Wiring / connection

    The most frequent trigger for E:17 is a lint filter clogged with accumulated lint from one or more drying loads. Remove the filter and clear all lint before running the next cycle.

  2. 02

    Time-based counter reaching threshold

    Wiring / connection

    Bosch dryers can trigger E:17 based on a cycle counter even if the filter appears only partially clogged. The counter prompts the user to clean the filter on a regular schedule regardless of visible buildup.

  3. 03

    Lint bypass accumulation on condenser fins

    Wiring / connection

    On condenser dryers, fine lint particles that pass through the primary filter can accumulate on the condenser unit. This restricts airflow and can contribute to the detection trigger. The condenser fins should be rinsed periodically with water.

  4. 04

    Lint filter damaged or improperly seated

    Part replacement

    A torn or warped lint filter mesh allows lint to bypass filtration, reducing the effectiveness of cleaning and potentially triggering airflow-related detection. Inspect the filter for damage and confirm it seats correctly in its housing.

  5. 05

    Airflow detection sensor fault

    Part replacement

    If E:17 reappears immediately after a thorough cleaning, the sensor or counter logic responsible for detection may require inspection. This is uncommon and is only a consideration after all physical cleaning steps have been completed.

See the test procedure for each cause

Frequently asked questions about E:17

What does E:17 mean on a Bosch dryer?
E:17 is a lint trap notification logged in the dryer's error memory. It indicates that the lint filter is full or that an internal cycle counter has reached its threshold and is prompting a cleaning. It is an informational code, not a fault, and does not indicate a component failure.
How do I fix E:17 on my Bosch dryer?
Remove the lint filter from its housing and clear all accumulated lint. On condenser models, also check the condenser unit for any lint buildup and rinse the fins with water if needed. Reinstall the filter securely and run a cycle to confirm normal operation. The notification should clear once the filter has been cleaned and the system registers restored airflow.
Will resetting my Bosch dryer clear the E:17 code?
A basic reset may clear the code from the display temporarily, but if the lint filter is not cleaned, the code will return. Because E:17 is stored in the error memory and can be triggered by a cycle counter, the underlying condition needs to be addressed by physically cleaning the lint filter rather than relying on a reset alone.
Is it safe to keep using my Bosch dryer when E:17 is showing?
E:17 is an informational notification rather than a shutdown fault, so the dryer will typically continue to operate. However, running the dryer with a clogged lint filter reduces efficiency, increases drying times, and places additional thermal stress on internal components. Cleaning the filter promptly is strongly recommended to maintain safe and efficient operation.
How much does it cost to repair a Bosch dryer showing E:17?
In the vast majority of cases, E:17 requires no parts or paid repair at all since cleaning the lint filter costs nothing. If the lint filter mesh is torn and needs replacement, filter components typically cost in the range of $15 to $50 depending on the model. If a sensor fault is identified after cleaning, a service call and parts could range from $80 to $200 or more depending on the component and labor rates in your area.

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