E:43Bosch Dryer — Bosch Dryer E:43 Error Code
Motor triac failure on control board
Severity
Critical
Difficulty
Advanced
Est. Cost
What's Happening
The motor triac (electronic switch) on the control board has failed. The motor doesn't receive proper driving signals. This is an internal board component failure.
How to Fix It
Reset power for 5 minutes. If E:43 returns, the control board's motor driver circuit has failed. The entire board needs replacement as the triac can't be individually repaired.
Frequently Asked Questions
What does E:43 mean on a Bosch dryer?
E:43 means the motor triac on the control board has failed. The board can't properly drive the drum motor.
Can the triac be replaced separately?
No. The triac is a surface-mount component integrated into the control board. The entire board must be replaced.
How much does a Bosch dryer control board cost?
Bosch dryer control boards typically cost $150–$300 for the part. With professional labor, expect $250–$500 total.