DTC codes / P24xx · Auxiliary emission controls / P2424
P2424 indicates that the powertrain control module has determined the hydrocarbon adsorption catalyst on bank 2 is not storing and releasing hydrocarbons efficiently enough to meet emissions standards. The computer monitors the catalyst's ability to adsorb hydrocarbons during cold starts and release them during normal operation, and it sets this code when the efficiency falls below a calibrated threshold.
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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