OBD Guide
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U028D

Lost Communication with Active Aerodynamic Feature Control Module A

U028D is an OBD-II diagnostic trouble code meaning: Lost Communication with Active Aerodynamic Feature Control Module A. Common causes: open or short circuit in the communication circuit, problems with power supply to the aerodynamics module. Estimated repair cost: $56–278.

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

Symptoms

  • Error message on the dashboard
  • Active aerodynamic elements do not work
  • Possible deterioration in handling at high speeds
  • The Check Engine light comes on

Causes

  • Open or short circuit in the communication circuit
  • Problems with power supply to the aerodynamics module
  • Malfunction of the active aerodynamics control module
  • Connector problems or contact corrosion
  • Engine control unit malfunction

How to Fix

  1. Check the integrity of the wiring harness to the aerodynamics module
  2. Check fuses and relays associated with the system
  3. Diagnose the active aerodynamics control module
  4. Check connections and connector contacts
  5. If necessary, replace the control module

Related codes

U028CU028EU029D

Error U028D by Vehicle Brand

AcuraAudiBAICBMWBYDBuickCadillacChanganCheryChevroletChryslerCitroenDodgeDongfengExeedFAWFordForthingFotonGACGMGMCGeelyGreat WallHavalHondaHongqiHyundaiInfinitiJACJaecooJaguarJeepJetourKaiyiKiaLadaLexusLi AutoLifanLincolnLivanMazdaMercedes-BenzMercuryMitsubishiNIONissanOldsmobileOmodaOpelPeugeotPlymouthPontiacRenaultSWMSaturnSkodaSkywellSubaruSuzukiTankToyotaVolkswagenVolvoVoyahXPengZeekrZotye

FAQ

What does the U028D code mean?

U028D is an OBD-II diagnostic trouble code that indicates: Lost Communication with Active Aerodynamic Feature Control Module A

What causes a U028D error code?

The most common causes of U028D include: Open or short circuit in the communication circuit; Problems with power supply to the aerodynamics module; Malfunction of the active aerodynamics control module; Connector problems or contact corrosion.

How do I fix a U028D diagnostic trouble code?

To fix U028D: Check the integrity of the wiring harness to the aerodynamics module. Check fuses and relays associated with the system. Diagnose the active aerodynamics control module. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with U028D?

Limited driving only, diagnose soon

How much does it cost to fix U028D?

The estimated repair cost for U028D is $56–278. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat