OBD Guide
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U11E9

Lost Communication With Active Grill Shutter

U11E9 is an OBD-II diagnostic trouble code meaning: Lost Communication With Active Grill Shutter. Common causes: open or short circuit in control circuit, grille motor malfunction. Estimated repair cost: $33–167.

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$33–167 (est.)

Symptoms

  • Error message on the dashboard
  • Increased fuel consumption
  • Radiator grille does not change position
  • The engine runs at elevated temperatures
  • Activating emergency engine operation

Causes

  • Open or short circuit in control circuit
  • Grille motor malfunction
  • Wiring harness damage
  • Failure of the active curtain control unit
  • Corrosion of electrical contacts

How to Fix

  1. Check the integrity of the system wires and connectors
  2. Test the active grille motor
  3. Check supply voltage and control signals
  4. Scan for other related error codes
  5. If necessary, replace faulty components

Related codes

U11E8U11EAB11E9

FAQ

What does the U11E9 code mean?

U11E9 is an OBD-II diagnostic trouble code that indicates: Lost Communication With Active Grill Shutter

What causes a U11E9 error code?

The most common causes of U11E9 include: Open or short circuit in control circuit; Grille motor malfunction; Wiring harness damage; Failure of the active curtain control unit.

How do I fix a U11E9 diagnostic trouble code?

To fix U11E9: Check the integrity of the system wires and connectors. Test the active grille motor. Check supply voltage and control signals. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with U11E9?

Yes, but get it checked soon

How much does it cost to fix U11E9?

The estimated repair cost for U11E9 is $33–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat