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Inspection Mode A

DTC Item Condition Number of driving cycles on the detecting condition
P0459 EVAP SYSTEM (CPC) PURGE CONTROL VALVE "A" CIRCUIT HIGH - 2
WARNING: When performing inspection mode A on a public road, pay sufficient attention to the traffic condition and give the highest priority to safe driving.
NOTE: Perform the inspection mode after warming up the engine except that the engine coolant temperature at engine start is specified.
  1. Check that the battery voltage is 12 V or more and fuel remains approx. half [20 - 40 L (5.3 - 10.6 US gal, 4.4 - 8.8 Imp gal)].
  2. Using the Subaru Select Monitor, perform the clear memory of [Engine]. Ref. to COMMON (DIAG)>CLEAR MEMORY .
  3. Drive for 20 minutes or more at a constant speed of 80 km/h (50 MPH) or more.
  4. Stop the vehicle and idle for one minute.
  5. Read the readiness code of [Engine] using Subaru Select Monitor and check that the concerned self diagnosis is completed. Ref. to ENGINE (DIAGNOSTICS) (H4DO (HEV))>ALL READINESS DIAGNOSTIC CODE(S) .
  6. Read the temporary code using the Subaru Select Monitor or general scan tool. Ref. to COMMON (DIAG)>DIAGNOSTIC TROUBLE CODE (DTC) .