OBD Guide
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U1727

Right Headlamp High Beam Control Module Lost Communication With Right Headlamp Leveling Actuator

U1727 is an OBD-II diagnostic trouble code meaning: Right Headlamp High Beam Control Module Lost Communication With Right Headlamp Leveling Actuator. Common causes: open or short circuit in the circuit, high beam control module malfunction. Estimated repair cost: $17–89.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$17–89 (est.)

Symptoms

  • Headlight range control not working
  • Error message on the dashboard
  • Incorrect headlight angle
  • Flashing headlights

Causes

  • Open or short circuit in the circuit
  • High beam control module malfunction
  • Damage to the level corrector actuator
  • Poor contact in connectors
  • Software error in the control unit

How to Fix

  1. Check the fuses of the relevant circuits
  2. Inspect the wiring harness for damage
  3. Check connectors and contacts
  4. Test the control module and actuator
  5. Reset the error and check for its reappearance

Related codes

U1726U1728B1626

FAQ

What does the U1727 code mean?

U1727 is an OBD-II diagnostic trouble code that indicates: Right Headlamp High Beam Control Module Lost Communication With Right Headlamp Leveling Actuator

What causes a U1727 error code?

The most common causes of U1727 include: Open or short circuit in the circuit; High beam control module malfunction; Damage to the level corrector actuator; Poor contact in connectors.

How do I fix a U1727 diagnostic trouble code?

To fix U1727: Check the fuses of the relevant circuits. Inspect the wiring harness for damage. Check connectors and contacts. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with U1727?

Limited driving only, diagnose soon

How much does it cost to fix U1727?

The estimated repair cost for U1727 is $17–89. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat