ABB Error 134405 — Illegal VB state.
Error / Erreur🇫🇷 Illegal VB state.
ABB — CATALOGUE PRODUCTION
ABB 134405 (“Illegal VB state.”): Illegal VB state.
Updated 2026-08-29 · LogrobotLM reference
What it means · Ce que ça veut dire
Illegal VB state. — ABB robot hardware event on the Illegal VB state. (IRC5). Specific to this controller generation. Severity: Major. Field diagnosis below (French); your robot's own manual remains authoritative.
A statemachine entered an unknown state. Le texte constructeur de ce code n'existe qu'en anglais dans les manuels ABB dont il provient. Il est reproduit tel quel ci-dessus ; le manuel de votre robot fait foi.
What to check · Que vérifier
- Inspect the Illegal VB state., its wiring and connections first.
- Match this code against your robot's event-log timeline before swapping parts.
- Follow the French field checks below — they are the tested sequence for this fault.
Frequently asked · Questions fréquentes
- What does ABB error 134405 mean?
- ABB 134405 (“Illegal VB state.”): Illegal VB state. — ABB robot hardware event on the Illegal VB state. (IRC5). Specific to this controller generation. Severity: Major. Field diagnosis below (French); your robot's own manual remains authoritative.
- How do you troubleshoot ABB error 134405?
- Inspect the Illegal VB state., its wiring and connections first. Match this code against your robot's event-log timeline before swapping parts. Follow the French field checks below — they are the tested sequence for this fault.
Related codes / Codes liés
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 →