U049B

Invalid Data Received From Tachograph Module

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$56–278 (est.)

Symptoms

Check Engine Light Is On
Limitation of vehicle functionality
Incorrect tachograph readings
Errors in the tachograph data log

Causes

Tachograph module malfunction
Problems with wiring or connectors
Software error in tachograph
Problems with tachograph power supply
Equipment incompatibility

How to Fix

Check connections and wiring to the tachograph
Conduct tachograph diagnostics
Update tachograph software
If necessary, replace the tachograph module
Repair only from an authorized dealer

Related codes

U049A U049C U0401