OBD Guide

B3A25

Active Aerodynamic Feature Control Module A Power Mode Circuit Low Voltage

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

Symptoms

  • Active aerodynamics malfunction
  • Dashboard warning light
  • Reduced aerodynamic efficiency

Causes

  • Poor contact in the power circuit
  • Broken or damaged wiring harness
  • Malfunction of the active aerodynamics control module
  • Fuse or relay problems

How to Fix

  1. Check voltage at active aerodynamics control module
  2. Inspect the wiring harness for damage
  3. Check contacts and connectors
  4. Replace fuse or relay if necessary
  5. Check and replace the control module if faulty

Related codes

Error B3A25 by Vehicle Brand