Allen-Bradley Error Code Reference — All 41 Codes
Complete Allen-Bradley error code cheat sheet. All 41 fault codes with plain-English explanations and direct links to fix guides.
Use this page when your Allen-Bradley 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 "Allen-Bradley F0001" or "Allen-Bradley overcurrent fault".
| Error Code | What It Means | Guide |
|---|---|---|
| Allen Bradley PowerFlex 40 F2 Fault | Causes & Fix | Fix → |
| Allen Bradley PowerFlex 40 F7 Fault | Causes & Fix | Fix → |
| Allen Bradley PowerFlex 40 F7 Fault: Motor Overload Causes and Fix | Allen Bradley PowerFlex 40 F7 fault means motor overload. Learn how to check parameter 22, motor FLA, and real load problems fast. | Fix → |
| Allen Bradley PowerFlex 523 F7 Fault | Causes & Fix | Fix → |
| Allen Bradley PowerFlex 525 F005 Fault, Overvoltage Causes & Fix | What Allen Bradley PowerFlex 525 F005 overvoltage means, why it trips on decel, and how to fix braking, line voltage, and regeneration issues. | Fix → |
| Allen Bradley PowerFlex 525 F7 Fault | Causes & Fix | Fix → |
| Allen Bradley PowerFlex 525 F7 Fault: Motor Overload Diagnosis and Fix | Allen Bradley PowerFlex 525 F7 fault means motor overload. Check parameter P046 Motor OL Current against motor nameplate FLA to fix nuisance trips fast. | Fix → |
| Allen Bradley PowerFlex 700 F7 Fault | Causes & Fix | Fix → |
| Allen Bradley PowerFlex 753 F12 Fault | Causes & Fix | Fix → |
| Allen Bradley PowerFlex 753 F12 Fault: DC Bus Overvoltage Causes and Fix | Allen Bradley PowerFlex 753 F12 fault means DC bus overvoltage. Learn the best fixes for decel overvoltage, braking, and repeat trips. | Fix → |
| Allen Bradley PowerFlex 753 F35 Fault | Causes & Fix | Fix → |
| Allen Bradley PowerFlex 753 F35 Fault: Heatsink Overtemp Causes and Fix | Allen Bradley PowerFlex 753 F35 fault means heatsink overtemperature. Learn how to clean the fan path and stop repeat overtemp trips. | Fix → |
| Allen Bradley PowerFlex Fault Codes | Complete Reference | Fix → |
| Allen-Bradley MicroLogix 1400 Common Fault Codes | Allen-Bradley MicroLogix 1400 fault codes explained. Learn how to diagnose and clear major/minor faults using RSLogix 500, LED indicators, and the LCD display. | Fix → |
| Allen-Bradley PowerFlex 40 Complete Fault Code Guide | Complete fault code guide for the Allen-Bradley PowerFlex 40 VFD, including common F-code trips, causes, and practical troubleshooting steps. | Fix → |
| Allen-Bradley PowerFlex 40 F3 Fault | Power Loss | Fix → |
| Allen-Bradley PowerFlex 4M Fault Codes | F2, F4, F5, F7, F12 Fix Guide | Fix → |
| Allen-Bradley PowerFlex 70 Fault Codes: Complete Guide | Allen-Bradley PowerFlex 70 VFD fault codes and diagnostics. F-codes, causes, and technician-level troubleshooting for PF70 drives. | Fix → |
| Allen-Bradley PowerFlex 753/755 Control Sync Fault Fix | On PowerFlex 753 and 755 drives, the Control Sync Fault (fault code F70, depending on firmware version sometimes paired with F71 Drive OL Lvl 1 or F72 Drive... | Fix → |
| Allen-Bradley PowerFlex 755 Aux Input Fault Fix | PowerFlex 755 Aux Input Fault (F2) means a digital input on the drive's I/O — one that has been configured as the auxiliary fault input — went to its... | Fix → |
| Allen-Bradley PowerFlex 755 Fault 7 | Motor Overload Causes & Fix | Fix → |
| Allen-Bradley PowerFlex 755 Fault Codes | Complete Troubleshooting Guide | Fix → |
| Allen-Bradley PowerFlex 755 Power Loss Fault Fix | PowerFlex 755 Power Loss Fault (F3 Power Loss, sometimes paired with F2 Aux Power Loss in the same event) means the drive detected loss of one or more input... | Fix → |
| Allen-Bradley PowerFlex F004 Fault | Undervoltage Fix | Fix → |
| Allen-Bradley PowerFlex F005 Fault | Overvoltage Fix | Fix → |
| Allen-Bradley PowerFlex F007 Fault | Motor Overload Fix | Fix → |
| Allen-Bradley PowerFlex F012 Fault | HW Overcurrent Fix | Fix → |
| Allen-Bradley PowerFlex F029 Fault | Analog Loss Fix | Fix → |
| Allen-Bradley PowerFlex F041 Fault | Motor Overload: What It Means and How to Fix It | Fix → |
| Allen-Bradley PowerFlex F063 Fault | Phase Short Fix | Fix → |
| Allen-Bradley PowerFlex F070 Fault | Power Unit Fault Fix | Fix → |
| Allen-Bradley PowerFlex F081 Fault | Communication Loss Fix | Fix → |
| Allen-Bradley PowerFlex F091 Fault | Encoder Loss Fix | Fix → |
| Allen-Bradley PowerFlex F122 Fault | I/O Board Failure Fix | Fix → |
| Allen-Bradley PowerFlex Fault F002 | Causes & Fix | Fix → |
| Allen-Bradley PowerFlex Fault F004 | Causes & Fix | Fix → |
| Allen-Bradley PowerFlex Fault F012 | Causes & Fix | Fix → |
| Allen-Bradley PowerFlex Fault F025 | Causes & Fix | Fix → |
| Allen-Bradley PowerFlex Fault F063 | Causes & Fix | Fix → |
| Allen-Bradley PowerFlex Fault F111 | Causes & Fix | Fix → |
| Allen-Bradley PowerFlex VFD Fault F7 | Motor Stalled Fix | Fix → |