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DTC codes / P24xx · Auxiliary emission controls / P24D6

P24D6EVAP System Pressure Sensor or Switch B Circuit Range or Performance

P24D6 indicates that the powertrain control module has detected an out-of-range or erratic signal from the EVAP system pressure sensor or switch B circuit. The computer compares the sensor voltage to expected values under specific operating conditions and flags a fault when the signal falls outside the allowable window or fails a rationality check.

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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