U350C

Control Module Cooling Fan Circuit/Open

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$17–89 (est.)

Symptoms

Control module overheating
Cooling fan does not work
Hot interior with engine running
Check engine light comes on
Decreased system performance

Causes

Broken wire in the fan circuit
Faulty fan relay
Damaged fan motor
Problems with the control unit
Corrosion or poor contact in connectors

How to Fix

Check the fan circuit fuse
Test the fan control circuit
Check the operation of the fan itself
Diagnose control relay
Check contacts and connectors for oxidation
Scan the control unit for additional errors

Related codes

U350D U350B P0480 P0481