Fault codes › U049B

U049B

Communication Network System
Free on OBD DashX

Want real-world data on U049B?

See which problems come with U049B, how often it shows up in other vehicles, and how to fix it — step by step.

  • Real-world fix data
  • How often it happens
  • Step-by-step repairs
See U049B on OBD DashX No sign-up needed · available in 10 languages

iWhat U049B means

  • Invalid Data Received From Tachograph Module

Log in to see the full breakdown

This is a manufacturer-specific code. Free CaRPM account, no card needed.

Symptoms Causes Related parts Solutions
Log in to read more
Free on OBD DashX

U049B on OBD DashX

Real-world causes, how often this code shows up, and the fix — step by step.

Open U049B No sign-up needed · available in 10 languages

Search fault codes

Scan your own car

Read and clear fault codes, live data and service resets with the CaRPM app.