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DTC codes / P24xx · Auxiliary emission controls / P2436
P2436 indicates that the powertrain control module has detected an out-of-range or performance fault in the secondary air injection system's air flow or pressure sensor circuit for bank 2. The computer compares the sensor signal against expected values during the air pump's active test and flags the circuit when the reading does not respond or stays outside the calibrated range.
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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