DTC codes / P24xx · Auxiliary emission controls / P24D9
P24D9 indicates that the powertrain control module has detected an intermittent fault in the electrical circuit for the evaporative emission system's pressure sensor or switch B. The computer sees the signal from that sensor drop out or become erratic for brief periods, rather than failing completely, which is why the code is stored as intermittent.
Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.
Get the app
Quick access from your home screen.