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DTC codes / P24xx · Auxiliary emission controls / P2435

P2435Secondary Air Injection System Air Flow/Pressure Sensor Circuit (Bank 2)

P2435 indicates that the powertrain control module has detected an implausible signal from the secondary air injection system's air flow or pressure sensor on bank 2, meaning the sensor's voltage or rationality check has failed. The computer expects a specific pressure or flow reading when the air pump runs, and the reported value falls outside that expected range during the system's self-test.

SystemPowertrain
Code typeGeneric (all makes)
SeverityLow
Fix difficultyIntermediate
AreaAuxiliary emission controls

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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