P0493

Fan Overspeed

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–167 (est.)

Symptoms

Engine overheating
Noisy fan operation
Unstable engine operation
Check Engine Light Illuminates

Causes

Fan control circuit malfunction
Wiring Harness Problems
Fan bearing wear
Short circuit in the circuit
Fan relay fault
Problems with the engine control unit (ECU)

How to Fix

Check the fan control circuit for opens and short circuits
Inspect the wiring harness for damage
Check fan bearings for wear
Replace fan relay if necessary
Check the operation of the engine control unit (ECU)

Related codes

P0480 P0481 P0482