P0AD3

Hybrid/EV Battery Pack Cooling Fan 3 Control Circuit High

Severity

🔴 High

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–167 (est.)

Symptoms

Check Engine light comes on
Hybrid system power reduction
Elevated battery temperature
Noisy cooling fans
Error message on display

Causes

Cooling fan malfunction
Open or short circuit in control circuit
Fan relay problems
Control unit malfunction
Corrosion of contacts or connectors

How to Fix

Check the condition of the cooling fan
Diagnose the control circuit for an open/short circuit
Check relays and fuses
Scan the control unit for errors
Clean system contacts and connectors

Related codes

P0AD1 P0AD2 P0AD4