OBD Guide

U028F

Lost Communication with Active Aerodynamic Feature Control Module C

U028F is an OBD-II diagnostic trouble code meaning: Lost Communication with Active Aerodynamic Feature Control Module C. Common causes: open or short circuit in the module power supply circuit, damage to the wiring harness to the module. Estimated repair cost: $56–278.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$56–278 (est.)

Symptoms

  • Active aerodynamic elements do not work
  • Check Engine light comes on
  • Possible reduction in engine power
  • Error message on the dashboard
  • Aerodynamic elements are fixed in one position

Causes

  • Open or short circuit in the module power supply circuit
  • Damage to the wiring harness to the module
  • Malfunction of the active aerodynamics module
  • Connector problems or contact corrosion
  • Failures in ECU software

How to Fix

  1. Check fuses associated with the system
  2. Inspect the wiring harness and connectors for damage.
  3. Check the power supply and ground of the module
  4. Scan the module for additional errors
  5. If necessary, replace the active aerodynamics module

Related codes

Error U028F by Vehicle Brand

FAQ

What does the U028F code mean?

U028F is an OBD-II diagnostic trouble code that indicates: Lost Communication with Active Aerodynamic Feature Control Module C

What causes a U028F error code?

The most common causes of U028F include: Open or short circuit in the module power supply circuit; Damage to the wiring harness to the module; Malfunction of the active aerodynamics module; Connector problems or contact corrosion.

How do I fix a U028F diagnostic trouble code?

To fix U028F: Check fuses associated with the system. Inspect the wiring harness and connectors for damage.. Check the power supply and ground of the module. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with U028F?

Limited driving only, diagnose soon

How much does it cost to fix U028F?

The estimated repair cost for U028F is $56–278. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version · NationStat