U1725
Left Headlamp High Beam Control Module Lost Communication With Left Headlamp Low Beam Control Module
U1725 is an OBD-II diagnostic trouble code meaning: Left Headlamp High Beam Control Module Lost Communication With Left Headlamp Low Beam Control Module. Common causes: broken or damaged wiring between modules, low beam control module malfunction. Estimated repair cost: $17–89.
Symptoms
- Inoperative low or high beam left headlight
- Flashing headlights
- Dashboard warning for lighting fault
- Incorrect operation of automatic light switching
Causes
- Broken or damaged wiring between modules
- Low beam control module malfunction
- High beam control module malfunction
- Problems with module power supply
- Corrosion of contacts in connectors
How to Fix
- Check the integrity of the wiring between the modules
- Check connections and connectors for corrosion
- Check power supply of modules
- Test the operation of the modules using diagnostic equipment
- Replace the faulty module if necessary
Related codes
FAQ
What does the U1725 code mean?
U1725 is an OBD-II diagnostic trouble code that indicates: Left Headlamp High Beam Control Module Lost Communication With Left Headlamp Low Beam Control Module
What causes a U1725 error code?
The most common causes of U1725 include: Broken or damaged wiring between modules; Low beam control module malfunction; High beam control module malfunction; Problems with module power supply.
How do I fix a U1725 diagnostic trouble code?
To fix U1725: Check the integrity of the wiring between the modules. Check connections and connectors for corrosion. Check power supply of modules. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U1725?
Limited driving only, diagnose soon
How much does it cost to fix U1725?
The estimated repair cost for U1725 is $17–89. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat