DTC codes / P2Axx · Hybrid propulsion / P2A65
P2A65 indicates the powertrain control module has detected that the fuel level sensor circuit for the alternative fuel tank (tank C) is reporting a signal outside its expected range or is not performing plausibly over time. The computer compares the sensor voltage against known limits and against other fuel level inputs, and it sets this code when the signal stays too high, too low, or fails to change as fuel is consumed.
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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