P0A9A

Hybrid/EV Battery Pack Cooling Fan 2 Control Circuit High

Severity

🔴 High

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–167 (est.)

Symptoms

The Check Engine Light or Hybrid System Warning comes on
Reduced vehicle power
Noisy operation or lack of operation of the battery cooling fan
Battery overheating
System transition to emergency mode

Causes

Battery cooling fan malfunction
Open or short circuit in wiring harness
Poor contact in control circuit connectors
Faulty relay or fuse
Fan control module problems

How to Fix

Check the condition of the fan circuit fuses and relays
Inspect the wiring harness and connectors for damage.
Check the resistance and operation of the fan
Scan the system for additional errors
Replace faulty fan or circuit components as necessary

Related codes

P0A99 P0A9B P0A9C