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Home >> Subaru >> 2023 >> Crosstrek Base, Automatic CVT Trans >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (2.0L (Except For HEV)) (Diagnostics) - Introduction >> Inspection Mode >> Procedure >> Inspection Mode Z

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
P219C Cylinder 1 Air-Fuel Ratio Imbalance - 2
P219D Cylinder 2 Air-Fuel Ratio Imbalance - 2
P219E Cylinder 3 Air-Fuel Ratio Imbalance - 2
P219F Cylinder 4 Air-Fuel Ratio Imbalance - 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. 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 (DIAGNOSTICS)>CLEAR MEMORY .
  3. 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 or the gear shift lever to the neutral position, and let the engine idle for 10 seconds or more.
    (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 with fully closed throttle to 60 km/h (37 MPH).
    (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 km/h (MPH)
    (I) Sec.
  4. Read the pending code using the Subaru Select Monitor or general scan tool. Ref. to COMMON (DIAGNOSTICS)>DIAGNOSTIC TROUBLE CODE (DTC) .