What are the common causes of P0AD0?

A battery cooling Fan 3 that will not turn. A relay or fuse that is not powering Fan 3. Debris blocking the Fan 3 blades. A fan control module that is not driving Fan 3.

Command Fan 3 on with a scan tool and watch the airflow. Check the Fan 3 relay and fuse. Measure the Fan 3 motor resistance. Inspect the Fan 3 blades for debris or binding. Replace Fan 3 if it will not run on command. Clear the code and retest.

P0AD0

Hybrid/EV Battery Pack Cooling Fan 3 Performance/Stuck Off

System: Powertrain control (P code)
Lamp: Check Engine Light
Category: Powertrain - Hybrid Propulsion

What it means

P0AD0 means Hybrid/EV Battery Pack Cooling Fan 3 Performance/Stuck Off.

Check these first

A battery cooling Fan 3 that will not turn
A relay or fuse that is not powering Fan 3
Debris blocking the Fan 3 blades
A fan control module that is not driving Fan 3

What to do next

Command Fan 3 on with a scan tool and watch the airflow
Check the Fan 3 relay and fuse
Measure the Fan 3 motor resistance
Inspect the Fan 3 blades for debris or binding
Replace Fan 3 if it will not run on command
Clear the code and retest

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Updated

Generic SAE J2012 definition. Last updated 2026-10-10.