U3573

Coolant Mixing Valve Control Circuit

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$17–56 (est.)

Symptoms

Unstable engine temperature
Poor interior heating
Engine overheating
Check Engine Light Is On
Reduced cooling system efficiency

Causes

Open or short circuit in control circuit
Solenoid valve malfunction
Problems with the control module
Wiring harness damage
Mechanical valve jamming

How to Fix

Check the integrity of the control circuit
Test the operation of the solenoid valve
Check the condition of the wiring harness
Clean or replace mixing valve
Flash or replace the control module if necessary

Related codes

U3572 U3574 U3575