KUKA Robot Error Codes: Complete Guide (KSS, KRC2, KRC4)

This comprehensive guide covers the most common KUKA robot error codes, including KSS system errors, KRC4 controller faults, and servo-related issues. Use this page to quickly identify problems, find solutions, and locate the right replacement parts to minimize downtime.

Quick Navigation

• Browse by System
• Browse by Error Type
• Popular KUKA Error Codes
• Recommended Replacement Parts

Browse KUKA Error Codes by System

KRC4 Controller Errors (Most Common)

• KSS15010 Drive Fault
• KSS15012 Motor Overload
• KSS15100 Resolver / Encoder Error
• KSS01405 Communication Error
• KSS03204 Safety Stop

KSS System Errors

• KSS01406 Bus Error
• KSS15700 Axis Not Ready
• KSS15800 Power Module Fault

KRC2 Legacy Errors

Older KUKA robots using KRC2 controllers may show different error structures. Support content is being expanded.

Browse by Error Type

Servo & Drive Errors

• Drive Fault (KSS15010)
• Motor Overload (KSS15012)
• Motor Overtemperature (KSS15013)

Encoder & Feedback Errors

• Resolver Error (KSS15100)
• Encoder Communication Error (KSS15102)

Safety Errors

• Safety Stop
• External Emergency Stop

Communication Errors

• Communication Error
• Ethernet Communication Fault

Most Common KUKA Robot Error Codes

These are the most frequently reported KUKA errors across industrial environments:

• KSS15010 – Drive Fault
• KSS15100 – Encoder / Resolver Error
• KSS01405 – Communication Error
• KSS03204 – Safety Stop

Recommended Replacement Parts for KUKA Robots

If your KUKA robot shows recurring errors, replacing worn components can significantly improve reliability.

• KUKA Servo Motors
• KUKA Encoders & Resolvers
• KUKA Drive Units
• Robot Signal & Power Cables
• KUKA SmartPad / Teach Pendant

Need Help Fixing a KUKA Error?

Contact our team for troubleshooting support or to find compatible replacement parts for your KUKA robot system.