U0241
Lost Communication With Headlamp Control Module A
U0241 is an OBD-II diagnostic trouble code meaning: Lost Communication With Headlamp Control Module A. Common causes: open or short circuit in the module power supply circuit, damage to the wiring harness to the control module. Estimated repair cost: $56–167.
Symptoms
- Headlights do not work or work incorrectly
- Lighting error message on dashboard
- Automatic light switching does not function
- Flashing or spontaneous turning on/off of headlights
- Adaptive lighting functions disabled
Causes
- Open or short circuit in the module power supply circuit
- Damage to the wiring harness to the control module
- Malfunction of the headlight control module itself
- Connector problems or contact corrosion
- Module software failures
How to Fix
- Check fuses associated with the lighting system
- Inspect the wiring harness and module connectors for damage.
- Check the power and ground on the module contacts
- Scan the module for additional errors
- If necessary, replace the headlight control module
Related codes
Error U0241 by Vehicle Brand
FAQ
What does the U0241 code mean?
U0241 is an OBD-II diagnostic trouble code that indicates: Lost Communication With Headlamp Control Module A
What causes a U0241 error code?
The most common causes of U0241 include: Open or short circuit in the module power supply circuit; Damage to the wiring harness to the control module; Malfunction of the headlight control module itself; Connector problems or contact corrosion.
How do I fix a U0241 diagnostic trouble code?
To fix U0241: Check fuses associated with the lighting system. Inspect the wiring harness and module connectors for damage.. Check the power and ground on the module contacts. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U0241?
Do not drive — repair immediately
How much does it cost to fix U0241?
The estimated repair cost for U0241 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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