OBD Guide

B3A30

Active Aerodynamic Feature Control Module D Power Mode Circuit High Voltage

B3A30 is an OBD-II diagnostic trouble code meaning: Active Aerodynamic Feature Control Module D Power Mode Circuit High Voltage. Common causes: malfunction of the active aerodynamics control module, problems with wiring or harness. Estimated repair cost: $111–333.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$111–333 (est.)

Symptoms

  • Disabling active aerodynamics
  • Dashboard warning
  • Reduced efficiency at high speeds

Causes

  • Malfunction of the active aerodynamics control module
  • Problems with wiring or harness
  • Short circuit in the circuit
  • Power outages

How to Fix

  1. Check the voltage in the module power circuit
  2. Inspect the wiring harness for damage
  3. Check the operation of the control module
  4. Replace faulty components

Related codes

Error B3A30 by Vehicle Brand

FAQ

What does the B3A30 code mean?

B3A30 is an OBD-II diagnostic trouble code that indicates: Active Aerodynamic Feature Control Module D Power Mode Circuit High Voltage

What causes a B3A30 error code?

The most common causes of B3A30 include: Malfunction of the active aerodynamics control module; Problems with wiring or harness; Short circuit in the circuit; Power outages.

How do I fix a B3A30 diagnostic trouble code?

To fix B3A30: Check the voltage in the module power circuit. Inspect the wiring harness for damage. Check the operation of the control module. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B3A30?

Limited driving only, diagnose soon

How much does it cost to fix B3A30?

The estimated repair cost for B3A30 is $111–333. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version · NationStat