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U350D: Control Module Cooling Fan Circuit Low

Severity
Medium
System
Vehicle Systems

What Does U350D Mean?

U350D is a diagnostic trouble code indicating: Control Module Cooling Fan Circuit Low. 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 U350D

Common Causes

Frequently Asked Questions

What does U350D mean?
U350D indicates: Control Module Cooling Fan Circuit Low. The vehicle's computer has detected that the Control Module Cooling Fan is not operating within its expected parameters and stored this diagnostic trouble code.
Can I drive with code U350D?
You can drive short distances for essential trips, but schedule a diagnosis soon. Driving with U350D for extended periods may cause additional problems.
How much does it cost to fix U350D?
Repair costs for U350D typically range from $20 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

  • 🔧 Repair broken wire or restore ground in Control Module Cooling Fan circuit
  • 🔧 Clean and secure Control Module Cooling Fan connector and ground points
  • 🔧 Replace failed Control Module Cooling Fan
  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

U3500 Control Module Input Power A Circuit Range/Performance U3501 Control Module Input Power A Circuit Low U3502 Control Module Input Power A Circuit High U3503 Control Module Input Power A Circuit Intermittent/Erratic U3504 Control Module Input Power B Circuit Range/Performance U3505 Control Module Input Power B Circuit Low U3506 Control Module Input Power B Circuit High U3507 Control Module Input Power B Circuit Intermittent/Erratic U3508 Control Module Input Power C Circuit Range/Performance U3509 Control Module Input Power C Circuit Low