DTC codes / P2Axx · Hybrid propulsion / P2A75
P2A75 indicates that the powertrain control module (PCM) has detected an abnormal signal from the hydraulic pump pressure sensor used in an alternative fuel system, such as a compressed natural gas or propane injection setup. The PCM compares the sensor's voltage or pressure reading against expected values and sets this code when the signal falls outside the valid range or is inconsistent with other operating parameters.
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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