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FANUC Alarm PAIN-158 — WARN Pulse coder battery low alarm

FANUC PAIN-158 (“WARN Pulse coder battery low alarm”): The pulse coder batteries are low. First check: Refer to troubleshooting section in the SYSTEM R-J Controller Series Electrical Connection and Maintenance Manual.

Updated 2026-09-17 · LogrobotLM reference

Description

The pulse coder batteries are low.

Remedy

Refer to troubleshooting section in the SYSTEM R-J Controller Series Electrical Connection and Maintenance Manual.

Related codes

PAIN-156WARN Pulse coder battery discon alarmPAIN-157ABRT Pulse coder alarmPAIN-159ABRT Motor overheat occurredPAIN-160ABRT Pulse coder communication error

Indicative field information — the robot manufacturer's manual and safety procedures always prevail. Never bypass a safety device; apply lockout/tagout (LOTO) before any physical intervention. How this reference is built →