OBD Guide

B3A16

A/C Refrigerant Distribution Valve B Actuator Temperature Range/Performance

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

Symptoms

  • Insufficient interior cooling
  • Uneven operation of the air conditioner
  • Noises during operation of the air conditioning system

Causes

  • Valve actuator malfunction
  • Problems in the electrical circuit (open, short circuit)
  • Incorrect signals from the control unit
  • Valve is dirty or clogged

How to Fix

  1. Check the electrical circuit of the actuator
  2. Check the operation of the actuator
  3. Replace faulty actuator if necessary
  4. Clean or replace refrigerant distribution valve

Related codes

Error B3A16 by Vehicle Brand