OBD Guide

B3A2C

Active Aerodynamic Feature Control Module C Power Mode Circuit High Voltage

B3A2C is an OBD-II diagnostic trouble code meaning: Active Aerodynamic Feature Control Module C Power Mode Circuit High Voltage. Common causes: generator malfunction (overcharge), wiring harness damage. Estimated repair cost: $56–167.

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

Symptoms

  • Incorrect operation of active aerodynamic elements
  • Warning message on instrument panel
  • Disabling active aerodynamics

Causes

  • Generator malfunction (overcharge)
  • Wiring harness damage
  • Short circuit in the circuit
  • Control module malfunction
  • Problems with the power relay

How to Fix

  1. Check generator voltage
  2. Inspect the wiring harness for damage
  3. Check relays and fuses
  4. Test the control module
  5. Replace faulty components

Related codes

Error B3A2C by Vehicle Brand

FAQ

What does the B3A2C code mean?

B3A2C is an OBD-II diagnostic trouble code that indicates: Active Aerodynamic Feature Control Module C Power Mode Circuit High Voltage

What causes a B3A2C error code?

The most common causes of B3A2C include: Generator malfunction (overcharge); Wiring harness damage; Short circuit in the circuit; Control module malfunction.

How do I fix a B3A2C diagnostic trouble code?

To fix B3A2C: Check generator voltage. Inspect the wiring harness for damage. Check relays and fuses. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B3A2C?

Limited driving only, diagnose soon

How much does it cost to fix B3A2C?

The estimated repair cost for B3A2C is $56–167. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version · NationStat