B393B

Air Conditioning Compressor Valve Control Circuit

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$56–167 (est.)

Symptoms

Air conditioner doesn't work
Warm air blows from the vents
Check Engine Light Is On
Increased noise from the compressor

Causes

Open or short circuit in wiring harness
Compressor solenoid valve malfunction
Problems with the climate control unit
Poor contact in connectors
Corrosion on terminals

How to Fix

Check the integrity of the wiring harness to the compressor
Check the resistance of the solenoid valve
Inspect connectors for oxidation
Check power and ground at valve connector
Scan the control unit for other errors
Replace solenoid valve or wiring harness if necessary

Related codes

B393A B393C P0532