Bosch error 595: Communication error
The components are not communicating reliably. Symptoms range from an occasional restart of the display to complete loss of assistance. Loose or wet connectors are the usual cause; a failing component is the rarer one.
Likely causes
- Loose plug in the harness or at the drive unit
- Water or corrosion in a connector
- Damaged cable inside the frame
- Software mismatch between components
- Failing display or drive unit electronics
How to fix Bosch error 595
- Full power cycle with the battery removed for a minute
- Reseat the display and clean the holder contacts
- Check all accessible plugs and lock them
- Dry the bike indoors if it has been wet
- Test ride; if the code returns, a dealer must trace the harness with DiagnosticTool
Warranty: Dirty contacts, damaged cables and water ingress are treated as wear or user damage and are rarely covered; a genuine component fault within the 2-year warranty normally is.
Typical cost: Cable and connector repairs 20-80 EUR/USD plus labour; a failed component 150-1000 EUR/USD depending on which.
Frequently asked
Can I reset Bosch error 595 myself?
A restart clears it; if it returns, there is a physical or software cause that a dealer has to find.
Can I keep riding with error 595?
Usually, but with reduced or interrupted assistance and the risk of the system shutting down mid-ride. Ride home carefully or on muscle power alone; do not plan long rides until the cause is found.
Is error 595 covered by warranty?
Dirty contacts, damaged cables and water ingress are treated as wear or user damage and are rarely covered; a genuine component fault within the 2-year warranty normally is.
Related Bosch codes
Not an official Bosch document. Compiled from workshop experience and public service information; details can differ per system version and bike brand.