B3A0D

A/C Refrigerant Expansion Valve Actuator Control Circuit High

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–167 (est.)

Symptoms

Air conditioner doesn't work
Unstable interior cooling
Hot air from deflectors
AC indicator flashing

Causes

Short circuit in control circuit
Refrigerant expansion valve malfunction
Broken or damaged wiring harness
Contact corrosion
Climate control unit error

How to Fix

Check the resistance of the refrigerant expansion valve
Inspect the wiring harness for damage
Check the integrity of the control circuit
Clean or replace corroded contacts
If necessary, replace the valve or control unit

Related codes

B3A0E B3A0F B3A10