🔧 FixIt

U0633: Lost Communication With Fan 2

System
Vehicle Systems

What Does U0633 Mean?

U0633 is a diagnostic trouble code indicating: Lost Communication With Fan 2. This code relates to the vehicle systems system. The vehicle's computer detected a condition outside normal operating parameters and stored this code.

What To Do Next

  1. 1
    Find your vehicle above

    Click your make and model for real owner reports and common causes specific to your vehicle.

  2. 2
    Check for recalls

    Go to nhtsa.gov/recalls and enter your VIN. Free repairs if covered.

  3. 3
    Get a professional diagnosis

    A code alone doesn't identify the exact failed part. A diagnostic ($50–$150) pinpoints the root cause.

Related Codes

U0628 Lost Communication With A/C Refrigerant Pressure Sensor “B” U0629 Lost Communication With A/C Refrigerant Temperature Sensor “B” U0630 Lost Communication With Engine Coolant Temperature Sensor 4 U0631 Lost Communication With Engine Coolant Temperature Sensor 5 U0632 Lost Communication With Fan 1 U0634 Lost Communication With Hybrid/EV Battery Pack Coolant Temperature Sensor A U0635 Lost Communication With Hybrid/EV Battery Pack Coolant Temperature Sensor B U0636 Lost Communication With Hybrid/EV Battery Pack Coolant Control Valve A