P0A81

Hybrid/EV Battery Pack Cooling Fan 1 Control Circuit/Open

Severity

🔴 High

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–278 (est.)

Symptoms

Check Engine Light Illuminated
Hybrid system power reduction
Noise from battery cooling fan
Error message on display
Battery compartment overheating

Causes

Open circuit in fan control circuit
Fan motor malfunction
Relay or fuse problems
Control module malfunction
Wiring harness damage

How to Fix

Check cooling system fuses and relays
Diagnose the fan control circuit
Check the operation of the fan
Inspect the wiring harness for damage
If necessary, replace the fan or repair the wiring

Related codes

P0A80 P0A82 P0A83