P0D65

Hybrid/EV Battery Pack Cooling Fan Enable Circuit Low

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$50–244 (est.)

Symptoms

Hybrid system power reduction
Battery overheat warning on instrument panel
Noisy operation or lack of operation of the battery cooling fan
Reduced electric vehicle range
Activation of emergency vehicle operation mode

Causes

Open or short circuit in fan control circuit
Fan control relay malfunction
Problems with the wiring harness to the fan
Battery control unit malfunction
Failure of the cooling fan itself

How to Fix

Check the condition of the fan circuit fuses
Diagnose the control circuit for opens or short circuits
Check the operation of the fan relay
Test the cooling fan itself
If necessary, replace the fan or its control circuit components

Related codes

P0D66 P0D64 P0A80