U0112
Sistema
Network (CAN Bus)
Escáner necesario
Full-system scanner (engine, ABS, SRS, transmission, service resets)

Lost Communication with Battery Energy Control Module

Understand U0112, common causes, and the right FOXWELL scanner to diagnose it.

Hybrid or EV battery management module offline — high-voltage system may not enable.

Síntomas habituales

  • Ready mode unavailable
  • Hybrid system warning
  • Multiple U-codes

Causas típicas

  • Failed BMS module
  • CAN wiring to battery pack
  • Low 12V auxiliary battery
  • Service plug not reset after HV work

¿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 U0112 with a basic code reader?
U0112 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 U0112?
It depends on the code and symptoms. Flashing check engine lights and misfire codes should be addressed immediately. Consult a professional if unsure.