P0A9A: Hybrid/EV Battery Pack Cooling Fan 2 Control Circuit High
What to do
As P0A85 — an electrical fault around the fan rather than a battery problem.
What this code means
The second battery cooling fan's control circuit reads high — the mirror of P0A99, per P0A85. Depending on the vehicle's logic the fan ends up off when needed or on permanently; the companion code stored usually says which.
Likely causes
Start here
- Wiring shorted to voltage · moderate
- Open circuit in control wiring · moderate
Less common
- Faulty hybrid battery cooling fan · moderate
Symptoms
Components involved
Information, not instruction
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Have anything you intend to act on checked by a trained person against the manufacturer's own procedure for your vehicle. Nothing here replaces that procedure.
Community experience
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