LogrobotLM

LogrobotLM — AI fault diagnosis for ABB · KUKA · FANUC robots. It reads your robot backup in your browser (never uploaded) and pinpoints the fault. Try it free → · Le diagnostic IA qui lit la sauvegarde de votre robot, sans rien téléverser.

FANUC Alarm APSH-159 — WARN Servos are not ready

FANUC APSH-159 (“WARN Servos are not ready”): The servos are not ready , so operation requested cannot be performed. First check: When resetting a fault, wait for the servos to click on before attempting to execute a program.

Updated 2026-08-29 · LogrobotLM reference

Description

The servos are not ready , so operation requested cannot be performed.

Remedy · Remède

When resetting a fault, wait for the servos to click on before attempting to execute a program.

Frequently asked · Questions fréquentes

What does FANUC alarm APSH-159 mean?
FANUC APSH-159 (“WARN Servos are not ready”): The servos are not ready , so operation requested cannot be performed.
How do you troubleshoot FANUC alarm APSH-159?
When resetting a fault, wait for the servos to click on before attempting to execute a program.

Related codes / Codes liés

APSH-157WARN Teach pendant must be enabledAPSH-158WARN No group output for weld schedAPSH-160WARN Robot not at POUNCE positionAPSH-161WARN No production style is running

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. · Informations indicatives issues du terrain — le manuel du constructeur et ses procédures de sécurité font foi. Ne shuntez jamais un organe de sécurité ; consignez (LOTO) avant toute intervention physique. How this reference is built →