B3A17

A/C Refrigerant Distribution Valve C Actuator Control Circuit Performance

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–167 (est.)

Symptoms

Unstable operation of the air conditioning system
No cooling or heating in one of the modes
The air conditioning system fault indicator lights up

Causes

Open or short circuit in valve wiring harness
Refrigerant distribution solenoid valve malfunction
Problems with the climate control unit
Poor contact in control circuit connectors

How to Fix

Check the integrity of the wiring harness to the refrigerant distribution valve
Check the resistance and operation of the solenoid valve
Check power supply and control signals from the control unit
If necessary, replace the faulty valve or repair the wiring harness

Related codes

B3A16 B3A18 B3937