U0155
Sistema
Network (CAN Bus)
Escáner necesario
Full-system scanner (engine, ABS, SRS, transmission, service resets)

Lost Communication with Instrument Panel Cluster

Understand U0155, common causes, and the right FOXWELL scanner to diagnose it.

The ECM or another module cannot communicate with the instrument cluster. Often appears with other U-codes after battery disconnect or low voltage.

Síntomas habituales

  • Gauge or display anomalies
  • Multiple warning lights
  • Intermittent no-start

Causas típicas

  • Low system voltage
  • Faulty instrument cluster
  • CAN wiring issue
  • Corrosion in connector at cluster

¿Qué escáner necesita?

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

Use datos en vivo y freeze frame antes de cambiar piezas. Códigos ABS, SRS y U suelen requerir un escáner de todos los sistemas.

Consejos de diagnóstico

  • Registre el freeze frame cuando se active el código
  • Borre el código solo tras corregir la causa
  • Revise códigos pendientes relacionados
  • Verifique que la batería esté por encima de 12,4 V antes de sospechar sensores

Escáneres FOXWELL recomendados

Preguntas frecuentes

Can I diagnose U0155 with a basic code reader?
U0155 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 U0155?
It depends on the code and symptoms. Flashing check engine lights and misfire codes should be addressed immediately. Consult a professional if unsure.