U0118
Système
Network (CAN Bus)
Scanner requis
Full-system scanner (engine, ABS, SRS, transmission, service resets)

Lost Communication with Fuel Injector Control Module

Understand U0118, common causes, and the right FOXWELL scanner to diagnose it.

Fuel injector control module not communicating — common on diesel with separate FICM.

Symptômes courants

  • No-start on diesel
  • Rough running
  • Multiple injector-related codes

Causes typiques

  • Failed FICM
  • CAN wiring in engine bay
  • Low voltage during crank
  • Corrosion at FICM connector

Quel scanner choisir ?

Full-system scanner (engine, ABS, SRS, transmission, service resets)

Utilisez les données en direct et le freeze frame avant de remplacer des pièces. Les codes ABS, SRS et U nécessitent souvent un scanner mult systèmes.

Conseils de diagnostic

  • Enregistrez le freeze frame lors de la première apparition du code
  • Effacez le code uniquement après avoir corrigé la cause
  • Vérifiez les codes en attente associés
  • Vérifiez que la batterie est au-dessus de 12,4 V avant de suspecter un capteur

Scanners FOXWELL recommandés

Questions fréquentes

Can I diagnose U0118 with a basic code reader?
U0118 may set in the engine module, but related diagnostics often benefit from an enhanced or full-system scanner with live data and freeze frame.
Is it safe to drive with U0118?
It depends on the code and symptoms. Flashing check engine lights and misfire codes should be addressed immediately. Consult a professional if unsure.