DTC P24D6: EVAP System Pressure Sensor/Switch "B" Circuit Range/Performance: Notes

1. - 

DTC detecting condition: 

Detected when two consecutive driving cycles with fault occur.

1. CHECK DTC  .
   1. Turn the ignition switch to ON.
   2. Using the Subaru Select Monitor or a general scan tool, read the DTC of [Engine]. Ref. to COMMON (DIAGNOSTICS)>DIAGNOSTIC TROUBLE CODE (DTC)

   Is DTC other than P24D6 displayed? (Current code)

   Yes  : Check the appropriate DTC using the "Diagnostic Trouble Code (DTC)". Ref. to ENGINE (DIAGNOSTICS) (H4DOTC)>DIAGNOSTIC TROUBLE CODE (DTC)>LIST

   No  : Go to  2.

2. CHECK DATA MONITOR  .
   1. Turn the ignition switch to ON (engine OFF).
   2. Using the Subaru Select Monitor, read the values of [Absolute Evap System Vapor Pressure] and [Purge Line Pressure] to compare with actual atmospheric pressure.
      NOTE:

      For detailed operation procedures, refer to "COMMON (DIAGNOSTICS)". Ref. to  COMMON (DIAGNOSTICS)>DATA MONITOR 

   Is the difference with the actual atmospheric pressure 4.8 [kPa] (36 mmHg, 1.4 inHg) or more?

   Yes  : Replace the part that showed larger deviation from the actual atmospheric pressure than the other.

   • If deviations in value for [Absolute Evap System Vapor Pressure] is larger: Replace the leak check valve assembly. Ref. to EMISSION CONTROL (AUX. EMISSION CONTROL DEVICES) (H4DOTC)>LEAK CHECK VALVE ASSEMBLY
   • If deviations in value for [Purge Line Pressure] is larger: Replace the CPC pressure sensor. Ref. to EMISSION CONTROL (AUX. EMISSION CONTROL DEVICES) (H4DOTC)>CPC PRESSURE SENSOR

   No  : Even if DTC is detected, the circuit has returned to a normal condition at this time. Reproduce the failure, and then perform the diagnosis again.

   NOTE:

   In this case, temporary poor contact of connector, temporary open or short circuit of harness may be the cause.