DTC codes / P2Dxx · Hybrid propulsion / P2D8A
P2D8A indicates that the fan 2 control module has reported an internal over-temperature condition to the powertrain control module (PCM). The PCM sets this code when the module's own temperature sensor signals that its internal electronics have exceeded a safe operating threshold, typically due to excessive current draw, poor ventilation, or a failing module.
Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.
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