OBD Guide

B3A2A

Active Aerodynamic Feature Control Module B Power Mode Circuit/Open

B3A2A is an OBD-II diagnostic trouble code meaning: Active Aerodynamic Feature Control Module B Power Mode Circuit/Open. Common causes: broken wires in the wiring harness, poor contact in module connectors. Estimated repair cost: $56–167.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$56–167 (est.)

Symptoms

  • Disabling active aerodynamics
  • The indicator light on the dashboard comes on
  • Reduced handling at high speeds

Causes

  • Broken wires in the wiring harness
  • Poor contact in module connectors
  • Active aerodynamics module B malfunction
  • Fuse or relay problems

How to Fix

  1. Check the integrity of the wiring harness and connectors
  2. Check fuses and relays associated with the module
  3. Check power and ground on the module
  4. If necessary, replace active aerodynamics module B

Related codes

Error B3A2A by Vehicle Brand

FAQ

What does the B3A2A code mean?

B3A2A is an OBD-II diagnostic trouble code that indicates: Active Aerodynamic Feature Control Module B Power Mode Circuit/Open

What causes a B3A2A error code?

The most common causes of B3A2A include: Broken wires in the wiring harness; Poor contact in module connectors; Active aerodynamics module B malfunction; Fuse or relay problems.

How do I fix a B3A2A diagnostic trouble code?

To fix B3A2A: Check the integrity of the wiring harness and connectors. Check fuses and relays associated with the module. Check power and ground on the module. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B3A2A?

Limited driving only, diagnose soon

How much does it cost to fix B3A2A?

The estimated repair cost for B3A2A is $56–167. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version · NationStat