U0112
System
Network (CAN Bus)
Scanner som krävs
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.

Vanliga symptom

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

Typiska orsaker

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

Vilken scanner behöver du?

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

Använd live-data och freeze frame innan du byter delar. ABS-, SRS- och U-koder kräver oftast en fullsystems-scanner.

Diagnostiktips

  • Spara freeze frame när koden först sätts
  • Rensa koden först efter att orsaken är åtgärdad
  • Kontrollera relaterade väntande koder
  • Verifiera batterispänning över 12,4 V innan du misstänker sensorer

Rekommenderade FOXWELL-scannrar

Vanliga frågor

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.