U0120
Système
Network (CAN Bus)
Scanner requis
Full-system scanner (engine, ABS, SRS, transmission, service resets)

Lost Communication with Electric Power Steering (EPAS) Module

Understand U0120, common causes, and the right FOXWELL scanner to diagnose it.

Electric power steering module not on the network — steering assist may be lost.

Symptômes courants

  • Heavy steering
  • EPS warning
  • Stability control affected

Causes typiques

  • Failed EPAS module
  • CAN wiring to steering rack
  • Low battery
  • Blown EPS fuse

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 U0120 with a basic code reader?
U0120 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 U0120?
It depends on the code and symptoms. Flashing check engine lights and misfire codes should be addressed immediately. Consult a professional if unsure.