Code Definition

P0A98 — Hybrid battery pack cooling fan 2 stuck on

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

About P0A98

P0A98 is a generic (obd-ii standard) powertrain diagnostic trouble code. 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 P0A98 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 is set when the hybrid/EV control module detects that Hybrid Battery Cooling Fan 2 continues to operate despite being commanded OFF. The control system monitors the fan’s operation via feedback signals or inferred data such as current draw or temperature behaviour. If the fan remains energised when it should be inactive, the system interprets this as the fan being stuck ON.

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