U0422
Sistema
Network (CAN Bus)
Escáner necesario
Full-system scanner (engine, ABS, SRS, transmission, service resets)

Invalid Data Received From Body Control Module

Understand U0422, common causes, and the right FOXWELL scanner to diagnose it.

BCM sending implausible data on the network — other modules cannot trust body system messages.

Síntomas habituales

  • Random electrical gremlins
  • Warning lights
  • Windows/locks behaving erratically

Causas típicas

  • BCM internal fault
  • Low voltage affecting BCM
  • Corrupted BCM software
  • Water in BCM

¿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 U0422 with a basic code reader?
U0422 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 U0422?
It depends on the code and symptoms. Flashing check engine lights and misfire codes should be addressed immediately. Consult a professional if unsure.