U3575 — Coolant Mixing Valve Position Sensor Circuit

What Does U3575 Mean?

U3575 is a diagnostic trouble code indicating: Coolant Mixing Valve Position Sensor Circuit. This code relates to the vehicle systems system. The vehicle's computer detected a condition outside normal operating parameters and stored this code.

Symptoms of U3575

⚠️ Check Engine Light (MIL) illuminated
⚠️ Erratic Coolant Mixing Valve Position Sensor readings
⚠️ Related system operating intermittently
⚠️ System warning light illuminated

Common Causes

🔍 Wiring issue in Coolant Mixing Valve Position Sensor circuit (damaged, chafed, or corroded)
🔍 Faulty Coolant Mixing Valve Position Sensor connector or terminal
🔍 Failed Coolant Mixing Valve Position Sensor
🔍 ECM/PCM connection issue

Frequently Asked Questions

What does U3575 mean?

U3575 indicates: Coolant Mixing Valve Position Sensor Circuit. The vehicle's computer has detected that the Coolant Mixing Valve Position Sensor is not operating within its expected parameters and stored this diagnostic trouble code.

Can I drive with code U3575?

You can drive short distances for essential trips, but schedule a diagnosis soon. Driving with U3575 for extended periods may cause additional problems.

How much does it cost to fix U3575?

Repair costs for U3575 typically range from $80 to $300, depending on the root cause. Simple wiring or connector repairs are on the lower end, while component replacement costs more. A proper diagnosis ($80–$150 at most shops) will identify the exact cause before committing to expensive parts.

What To Do Next

Possible Fixes

🔧 Inspect and repair Coolant Mixing Valve Position Sensor wiring and connectors
🔧 Replace faulty Coolant Mixing Valve Position Sensor

1
Find your vehicle above
Click your make and model for real owner reports and common causes specific to your vehicle.
2
Check for recalls
Go to nhtsa.gov/recalls and enter your VIN. Free repairs if covered.
3
Get a professional diagnosis
A code alone doesn't identify the exact failed part. A diagnostic ($50–$150) pinpoints the root cause.

U3575: Coolant Mixing Valve Position Sensor Circuit