P2C40

Fan 4 Control Circuit High

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$17–56 (est.)

Symptoms

Engine overheating
Cooling fan malfunction
Check Engine light comes on
Reduced cooling efficiency
Increased fuel consumption

Causes

Open or short circuit in control circuit
Faulty fan relay
Fuse problems
Malfunction of the fan itself
Wiring harness damage

How to Fix

Check the integrity of the fan control circuit
Check the condition of the relays and fuses
Test the fan operation
Check wiring harness for damage
Replace faulty components

Related codes

P2C41 P2C42 P2C43