What does code P24D5 mean?

Q: What does code P24D5 mean?

EVAP System Pressure Sensor or Switch B Circuit. P24D5 indicates that the powertrain control module has detected an electrical fault in the circuit for the EVAP system pressure sensor or switch B, which is used to monitor fuel vapor pressure in the evaporative emissions system. The computer compares the sensor B signal against expected values and sets this code when the voltage or resistance falls outside the normal range, often due to a wiring or sensor issue.

DTC codes / P24xx · Auxiliary emission controls / P24D5

P24D5EVAP System Pressure Sensor or Switch B Circuit

P24D5 indicates that the powertrain control module has detected an electrical fault in the circuit for the EVAP system pressure sensor or switch B, which is used to monitor fuel vapor pressure in the evaporative emissions system. The computer compares the sensor B signal against expected values and sets this code when the voltage or resistance falls outside the normal range, often due to a wiring or sensor issue.

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.