P0AD1

Hybrid/EV Battery Pack Cooling Fan 3 Stuck On

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$33–167 (est.)

Symptoms

Continuous operation of the battery cooling fan
Increased auxiliary battery drain
Reduced performance of the hybrid system
Possible dashboard warnings
Increased noise from the cooling system

Causes

Cooling fan malfunction
Fan relay stuck
Short circuit in control circuit
Control unit malfunction
Wiring damage

How to Fix

Check fan operation manually
Diagnose relay and control circuit
Check the condition of the wiring and connectors
Test the control unit for errors
Replace a faulty fan or relay

Related codes

P0AD0 P0AD2 P0AD3