Code Definition

P0A82 — Hybrid battery pack cooling fan 1 stuck off

System: Powertrain  |  Type: Generic (OBD-II Standard)  |  Make: Toyota

About P0A82

P0A82 is a generic (obd-ii standard) powertrain diagnostic trouble code recorded for Toyota vehicles. It belongs to the P-prefix family of codes, which covers engine, transmission, emissions, or fuel-system faults.

Scanning & clearing: A generic OBD-II scan tool will usually read and clear powertrain (P) codes. For live data, freeze-frame capture, and bi-directional tests you may need a more capable scan tool that supports the vehicle's ECM protocol.

Because P0A82 is a generic OBD-II code, its base definition is shared across manufacturers. The specific diagnostic steps, reference values, and repair procedures can vary by vehicle, and the TaT Diagnostic Assistant includes verified procedures submitted by working technicians.

Code Information

This DTC sets when the battery ECU detects that Cooling Fan 1 for the hybrid battery is not operating when commanded ON. The ECU expects a certain feedback signal (if applicable) or current draw from the fan circuit during operation. If the fan remains off despite an activation command—typically during elevated battery temperatures—the ECU determines that the fan is stuck off and sets this fault.

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