B3A06

A/C Refrigerant Distribution Valve Actuator D Control Circuit/Open

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$33–167 (est.)

Symptoms

Air conditioner doesn't work
Reduced cooling efficiency
Uneven interior cooling
Check Engine light comes on

Causes

Broken wiring harness to valve
Short circuit in control circuit
Solenoid valve malfunction
Problems with the climate control unit
Corrosion of connector contacts

How to Fix

Check the integrity of the wiring harness and contacts
Measure valve winding resistance
Check control voltage from the climate control unit
Scan for related errors
Replace faulty valve if necessary

Related codes

B3A05 B3A07 U101E