DTC codes / P2Axx · Hybrid propulsion / P2AAE
P2AAE is a generic powertrain code that indicates the diesel fuel presence sensor circuit is reporting a voltage below its expected range. The engine control module (ECM) monitors this sensor to detect water or incorrect fuel in the diesel fuel system, and it sets the code when the signal wire shows a low-voltage condition that is inconsistent with normal sensor operation.
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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