B3A1A

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

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–167 (est.)

Symptoms

Unstable operation of the air conditioner
Lack of cold air
Noises from the air conditioning system
Air conditioning system protection triggered

Causes

Valve actuator malfunction
Problems in the wiring harness
Mechanical valve failure
Poor contact in the electrical circuit
Control unit software error

How to Fix

Check connections and wiring harness
Test valve actuator
Check resistance and voltage on the actuator
Replace the faulty actuator if necessary
Reset the error and check the system operation

Related codes

B3A19 B3A1B B3A1C