U350D
Control Module Cooling Fan Circuit Low
U350D is an OBD-II diagnostic trouble code meaning: Control Module Cooling Fan Circuit Low. Common causes: broken wire in the fan circuit, poor connection in connectors. Estimated repair cost: $33–111.
Symptoms
- Control module overheating
- Cooling fan does not work
- Hot air from the ventilation system
- Check Engine light comes on
- Reduced engine performance
Causes
- Broken wire in the fan circuit
- Poor connection in connectors
- Fan relay fault
- Damaged cooling fan
- Control module malfunction
How to Fix
- Check the integrity of the fan circuit wires
- Inspect connectors and connections for corrosion
- Check fan relay operation
- Test the cooling fan
- Check the control module for faults
Related codes
Error U350D by Vehicle Brand
FAQ
What does the U350D code mean?
U350D is an OBD-II diagnostic trouble code that indicates: Control Module Cooling Fan Circuit Low
What causes a U350D error code?
The most common causes of U350D include: Broken wire in the fan circuit; Poor connection in connectors; Fan relay fault; Damaged cooling fan.
How do I fix a U350D diagnostic trouble code?
To fix U350D: Check the integrity of the fan circuit wires. Inspect connectors and connections for corrosion. Check fan relay operation. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U350D?
Do not drive — repair immediately
How much does it cost to fix U350D?
The estimated repair cost for U350D is $33–111. Actual cost depends on your vehicle, location, and labor rates.
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