U049B
Invalid Data Received From Tachograph Module
U049B is an OBD-II diagnostic trouble code meaning: Invalid Data Received From Tachograph Module. Common causes: tachograph module malfunction, problems with wiring or connectors. Estimated repair cost: $56–278.
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
Error U049B by Vehicle Brand
FAQ
What does the U049B code mean?
U049B is an OBD-II diagnostic trouble code that indicates: Invalid Data Received From Tachograph Module
What causes a U049B error code?
The most common causes of U049B include: Tachograph module malfunction; Problems with wiring or connectors; Software error in tachograph; Problems with tachograph power supply.
How do I fix a U049B diagnostic trouble code?
To fix U049B: Check connections and wiring to the tachograph. Conduct tachograph diagnostics. Update tachograph software. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U049B?
Yes, but get it checked soon
How much does it cost to fix U049B?
The estimated repair cost for U049B is $56–278. Actual cost depends on your vehicle, location, and labor rates.
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