P2CB9

Fan 2 Underspeed

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$17–89 (est.)

Symptoms

Engine overheating
Unstable engine operation at high temperatures
Check Engine Light Is On
Cooling fan noise
The fan does not turn on or runs slowly

Causes

Fan motor malfunction
Fan relay problems
Open or short circuit in control circuit
Temperature sensor malfunction
Problems with the engine control unit

How to Fix

Check fan operation visually
Check the integrity of wires and connectors
Check relays and fuses
Test the fan motor
Check signals from the control unit

Related codes

P2CBA P2CBB P0480