Code END3: , which will not be executed. OVERLAPPED JMP
Issue Description & Safety Warning
The Fanuc 30i/31i/32i CNC has triggered a critical , which will not be executed. OVERLAPPED JMP alarm. Immediate attention from a qualified operator or maintenance technician is required to prevent secondary damage to the equipment or spoiled parts during the manufacturing cycle. Always ensure standard safety and LOTO procedures are followed before accessing electrical cabinets.
Official Troubleshooting Steps
If JMPE is missing, add it in proper position. If the JMP is unnecessary, remove it. There is no JMPE that corresponds to this JMP. JMP/JMPE TO BAD COM LEVEL JMP and corresponding JMPE must have same COM/COME status. Review JMP range and COM range, to adjust not to overlap with each other: it is possible that one range includes the other completely. JMP and corresponding JMPE have different COM/COME status. COME IN JMP COME and corresponding COM must have same JMP/JMPE status. Review COM range and JMP range, to adjust not to overlap with each other: it is possible that one range includes the other completely. COME is found between JMP and JMPE, and COM and corresponding COME have different JMP/JMPE status. END IN JMP
Source: Fanuc Series 30i/31i/32i-A Maintenance Manual, Appendix A Alarm List — PMC alarms (B-64485EN/01)
Last reviewed: 2026-07-01 · Verified against the manufacturer’s official documentation.
About Fanuc 30i/31i/32i CNC Alarms
Fanuc controllers include extensive self-diagnostics that flag or halt the machine when a fault is detected. Error code END3 on the 30i/31i/32i CNC identifies one specific fault condition — its documented cause and the official corrective steps are listed above, sourced from Fanuc's service documentation. Always confirm against the manual for your exact machine configuration and follow LOTO procedures before servicing.
Complete Alarm List: 85 Fanuc 30i/31i/32i CNC codes.
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