CodesErreur Logo
CodesErreur.comDiagnostic Database
Database Business Directory
Tools
Diagnostic ToolsNew Parts Locator
Community
CertificationsPRO Top Techs
B2B Services
Brands Manuals Specialists Job Board Elite Forum Academy
Premium
CodesErreur Logo

CodesErreur.com

Premium appliance diagnostics & repair database.
Powered by AI to help certified technicians worldwide.

Trusted by professionals in CH & FR

Platform

Error Code SearchAI Diagnostic ChatBrand Pokedex

Professionals

Elite Tech ForumElite Job BoardPremium Memberships

Corporate

Terms of UsePrivacy Policy

SAFETY DISCLAIMER

The technical information, diagnostic guides, error codes, and AI-generated suggestions provided on this website are intended exclusively for certified and qualified professionals. Appliance repair involves severe electrical hazards, high voltages, and mechanical risks that can result in fatal injury or severe property damage. If you are not a trained technician, do not attempt to repair any appliances. CodesErreur assumes no responsibility or liability for any damage, injury, or consequential losses resulting from the use of the information provided on this platform. You use all information entirely at your own risk.

© 2026 CodesErreur. All rights reserved.

Official Swiss Repair Partner: Electroassistance Terms of Service Privacy Policy
Back to Search
Bosch
Appliance
Data independently verified by Elite B2B Technicians
Diagnostic Complet

Error Code E4 Bosch

Symptom / Description

L'appareil fonctionne sans chauffer l'eau.

Root Cause

Défaut de mise à la terre dans le circuit de chauffage (chauffage principal ou Zeolith) ou relais de sécurité défectueux sur le module de puissance.

Repair Instructions

UNLOCKED

Tester les composants de chauffage pour un défaut de mise à la terre et les remplacer si nécessaire. Si les composants sont bons, remplacer le module de puissance.

Esta solução resolveu o problema?

Need Help? Call a Technician Worldwide Bosch Parts Finder