B3A08

A/C Refrigerant Distribution Valve Actuator D Control Circuit High

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–167 (est.)

Symptoms

Incorrect operation of the air conditioning system
Lack of cold air in certain areas of the cabin
Hot air from deflectors

Causes

Broken wires in the control circuit
Valve connector contact corrosion
Refrigerant distribution valve malfunction
Problems in the air conditioning control unit

How to Fix

Check the integrity of the wiring harness and valve connector contacts
Measure the resistance of the refrigerant distribution valve
Check the voltage at the valve connector with the air conditioner on
Replace the faulty valve or clean the contacts if necessary

Related codes

B3A09 B3A07 B3A0A