U048B
Invalid Data Received From Headlamp Leveling Control Module B
U048B is an OBD-II diagnostic trouble code meaning: Invalid Data Received From Headlamp Leveling Control Module B. Common causes: malfunction of headlight adjustment module b, open or short circuit in wiring. Estimated repair cost: $56–167.
Symptoms
- Error message on the dashboard
- Disabling automatic headlight leveling
- Incorrect operation of the lighting system
- Headlights flashing when driving
Causes
- Malfunction of headlight adjustment module B
- Open or short circuit in wiring
- Problems with the CAN bus
- Contact corrosion
- Software error in the control unit
How to Fix
- Check the integrity of the wiring to the headlight adjustment module
- Diagnose headlight adjustment module B
- Check CAN bus connections
- Update control unit software
- Replace headlight adjustment module B if necessary
Related codes
Error U048B by Vehicle Brand
FAQ
What does the U048B code mean?
U048B is an OBD-II diagnostic trouble code that indicates: Invalid Data Received From Headlamp Leveling Control Module B
What causes a U048B error code?
The most common causes of U048B include: Malfunction of headlight adjustment module B; Open or short circuit in wiring; Problems with the CAN bus; Contact corrosion.
How do I fix a U048B diagnostic trouble code?
To fix U048B: Check the integrity of the wiring to the headlight adjustment module. Diagnose headlight adjustment module B. Check CAN bus connections. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U048B?
Limited driving only, diagnose soon
How much does it cost to fix U048B?
The estimated repair cost for U048B is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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