OBD Guide

B3A07

A/C Refrigerant Distribution Valve Actuator D Control Circuit Low

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

Symptoms

  • The air conditioner does not work or does not work correctly
  • Uneven interior cooling
  • Check Engine light comes on

Causes

  • Open or short circuit in wiring harness
  • Refrigerant distribution valve D fault
  • Problems with the air conditioning control unit
  • Blown fuse

How to Fix

  1. Check fuses associated with the air conditioning system
  2. Inspect the wiring harness for damage
  3. Check the resistance of the refrigerant distribution valve D
  4. Check valve control circuit voltage
  5. Replace faulty valve or repair wiring harness

Related codes

Error B3A07 by Vehicle Brand