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DTC codes / P24xx · Auxiliary emission controls / P2432
P2432 means the secondary air injection (SAI) system's air flow or pressure sensor is reporting a voltage below the normal range to the engine computer. The powertrain control module (PCM) expects a signal between roughly 0.5 and 4.5 volts, and it sets this code when the sensor circuit stays too low for a calibrated time.
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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