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Home >> Subaru >> 2024 >> WRX Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (Diagnostics - Introduction) >> Inspection Mode >> Procedure >> Inspection Mode Z
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Inspection Mode Z

DTC Description & trouble part Condition Number of driving cycles on the detecting condition
P0030 A/F/O2 HEATER CONTROL CIRCUIT BANK 1 SENSOR 1 - 2
P0068 MAP/MAF - THROTTLE POSITION CORRELATION - 2
P0101 MASS OR VOLUME AIR FLOW SENSOR "A" CIRCUIT RANGE/PERFORMANCE - 2
P0244 TURBOCHARGER/SUPERCHARGER WASTEGATE SOLENOID "A" RANGE/PERFORMANCE - 2
P04F0 EVAP SYSTEM HIGH PRESSURE PURGE LINE (CPC2) PERFORMANCE During acceleration, depress the pedal with the accelerator opening angle of 50% as a reference. 2
WARNING: When performing inspection mode Z 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. Using the Subaru Select Monitor, perform the clear memory of [Engine]. Ref. to COMMON (DIAGNOSTICS)>CLEAR MEMORY .
  2. Drive according to the drive pattern described below.
    G16348863Courtesy of SUBARU OF AMERICA, INC.
    (1) 0 km/h (0 MPH)
    (2) 60 km/h (37 MPH)
    (3) 88 km/h (55 MPH)
    (A) Shift the select lever to "P" range, and let the engine idle for 10 seconds or more. (CVT model)
    Place the gear shift lever in neutral position, and let the engine idle for 10 seconds or more. (MT model)
    (B) Accelerate with the throttle half-open to 88 km/h (55 MPH) or more.
    (C) Drive for 20 seconds or more at 88 km/h (55 MPH) or more.
    (D) Decelerate the vehicle speed to 60 km/h (37 MPH) with fully closed throttle.
    (E) Drive for 20 seconds or more at 60 km/h (37 MPH) or less.
    (F) Accelerate with the throttle half-open to 88 km/h (55 MPH) or more.
    (G) Stop vehicle with the throttle fully closed.
    (H) Vehicle speed
    (I) Sec.
  3. Read the pending code using the Subaru Select Monitor or general scan tool. Ref. to COMMON (DIAGNOSTICS)>DIAGNOSTIC TROUBLE CODE (DTC) .