Fanuc Error Code Reference — All 36 Codes
Complete Fanuc error code cheat sheet. All 36 fault codes with plain-English explanations and direct links to fix guides.
Use this page when your Fanuc drive, CNC, servo, or controls hardware posts an alarm during production. Start with the exact code, then open the fix guide for overloads, encoder faults, communication alarms, power quality issues, and drive or board failures.
Tip: search the exact brand, model, and alarm together, for example "Fanuc F0001" or "Fanuc overcurrent fault".
| Error Code | What It Means | Guide |
|---|---|---|
| Doosan CNC Alarm Codes Guide | Fanuc / Fanuc i Series Controls | Fix → |
| Fanuc 0i-MD Alarm Code Guide | Complete Diagnostic Reference | Fix → |
| Fanuc 30i/31i/32i Alarm Code Guide | Complete Diagnostic Reference | Fix → |
| Fanuc Alarm 1 Overtravel | Causes & Fix | Fix → |
| Fanuc Alarm 10 Servo Alarm | Causes & Fix | Fix → |
| Fanuc Alarm 2 | Overtravel Plus Causes & Fix | Fix → |
| Fanuc Alarm 3 | Overtravel Minus Hardware Causes & Fix | Fix → |
| Fanuc Alarm 300 | APC Alarm Fix (Absolute Encoder) | Fix → |
| Fanuc Alarm 300: APC Battery Low | Absolute Encoder Battery Fix | Fix → |
| Fanuc Alarm 360 | APC Alarm Battery Low Causes & Fix | Fix → |
| Fanuc Alarm 4 | Stored Stroke Limit Overtravel | Fix → |
| Fanuc Alarm 400 | Causes & Fix | Fix → |
| Fanuc Alarm 401 | Servo Axis Overload Fix | Fix → |
| Fanuc Alarm 409 | Servo Overload (Z-Axis) | Fix → |
| Fanuc Alarm 411 | Causes & Fix | Fix → |
| Fanuc Alarm 414 | Servo Axis Following Error Fix | Fix → |
| Fanuc Alarm 424 | Causes & Fix | Fix → |
| Fanuc Alarm 435 | Causes & Fix | Fix → |
| Fanuc Alarm 436 | Causes & Fix | Fix → |
| Fanuc Alarm 437 | Servo Following Error 4th Axis Causes & Fix | Fix → |
| Fanuc Alarm 460 | Spindle Overload | Fix → |
| Fanuc Alarm 460: Spindle Speed Error | Detailed Troubleshooting | Fix → |
| Fanuc Alarm 5 | Stored Stroke Limit 2 Overtravel | Fix → |
| Fanuc Alarm 500 | Causes & Fix | Fix → |
| Fanuc Alarm 506 | Servo Following Error Fix | Fix → |
| Fanuc Alarm 6 Overtravel | Causes & Fix | Fix → |
| Fanuc Alarm 600 | Causes & Fix | Fix → |
| Fanuc Alarm 700 | Causes & Fix | Fix → |
| Fanuc Alarm 700 Spindle Overheat | Detailed Fix Guide | Fix → |
| Fanuc Alarm 750 | Causes & Fix | Fix → |
| Fanuc Alarm 800: APC Alarm | Causes and Fix | Fix → |
| Fanuc Alarm 90 | Causes & Fix | Fix → |
| Fanuc CNC Alarm Codes | Complete Reference | Fix → |
| Fanuc M-Series Control Alarm Codes: Complete Guide | Fanuc M-Series CNC control alarm codes and diagnostics. Servo, spindle, PMC, and system alarms with causes and technician-level fixes. | Fix → |
| Fanuc OT Alarm | Software Overtravel (All Series) | Fix → |
| Fanuc P/S Alarm | Program and Syntax Error Codes Fix Guide | Fix → |