RideFixerBosch error code
Bosch error 800004: ABS control unit not working
High severity Service immediately
Can I ride home with this error?
Ride with caution. Your brakes still work but ABS may not; ride slowly, brake gently, and have it checked before further rides.
What it means
The ABS control unit is not working.
Likely causes
- ABS control unit fault
- Outdated software
Symptoms
- Code 800004
- ABS light on
How to fix it
- Install any software update in the eBike Flow app.
- Switch the eBike system off, wait a few seconds, then switch it on again.
- If the ABS light stays on, contact your Bosch eBike dealer.
How urgent is it?
Do not rely on ABS until a Bosch eBike dealer has checked it.
Applies to
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