U0605

Lost communication With A/C Refrigerant Sensor A

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$17–56 (est.)

Symptoms

The air conditioner does not work or does not work correctly
Check Engine Light Is On
No cold air from vents
The climate control system goes into emergency mode

Causes

Open or short circuit in the sensor circuit
Refrigerant sensor malfunction
Connector problems or contact corrosion
Air conditioning control module malfunction
ECU software error

How to Fix

Check the integrity of the wiring to the refrigerant sensor
Check connectors and contacts for oxidation
Test the refrigerant sensor with a multimeter
Reset the error and check for its reappearance
If necessary, replace the refrigerant sensor

Related codes

U0606 U0604 U0121