Bosch Dryer Error E19 — What It Means & How to Fix It

What Does This Error Mean?

E19 means the Bosch dryer's main control board and one of its sub-boards (display board, motor board, or sensor board) have lost communication. Modern Bosch dryers have multiple electronic boards that talk to each other — when the communication link between them fails, E19 appears. A power cycle often clears it; if not, a wiring or board fault requires a technician.

Affected Models

Bosch WTW87565GB
Bosch WTH84000GB
Bosch WQB145B0GB
Bosch Serie 6 and Serie 8 Dryers
Bosch WTV74100GB

Common Causes

Transient power fluctuation disrupted the communication between boards — a one-time event
Loose internal wiring connector between the main board and a sub-board
Main control board fault — unable to communicate with connected boards
Display board or motor control board fault — not responding to the main board
Software or firmware issue on one of the boards causing communication failure

How to Fix It

Unplug the dryer from the wall for 5 minutes, then plug back in and restart.

E19 caused by a power fluctuation or transient software error will clear with a full power reset. If E19 does not return, monitor the dryer over the next few cycles.
If E19 returns, unplug the dryer again and leave it for 30 minutes.

A longer power drain ensures all board capacitors fully discharge, giving the firmware a complete reset.
Check the power socket — plug a different appliance in to confirm the socket is supplying stable power.

An unstable power supply can cause repeated E19 events. Try plugging the dryer into a different socket if possible.
If E19 persists after multiple resets, call Bosch service — a board or wiring fault needs professional diagnosis.

Do not continue running the dryer with persistent E19 — incomplete cycles can damage laundry and the appliance.

When to Call a Professional

If a power cycle does not clear E19, a technician is needed to identify which board or connector has failed. Board-to-board communication faults require specialist diagnostic tools to isolate. Bosch service: 0344 892 8979 (UK).

Frequently Asked Questions

Can a software update fix Bosch dryer E19?

In some cases, yes. Bosch engineers can update firmware on certain models during a service visit. If E19 appears on a relatively new dryer with no obvious cause, a firmware update may be part of the solution. Ask the technician about this when they visit.