2019 Subaru Crosstrek Base, Automatic CVT TransFACTORY OEM SERVICE PROCEDURE

Inspection Mode Z

DTC Item 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.

Diagnostic procedure: 

  1. Using the Subaru Select Monitor, clear the memory of [Engine Control System]. Refer to COMMON (DIAG)>CLEAR MEMORY .
  2. Drive according to the drive pattern described below.
    G13238585Courtesy of SUBARU OF AMERICA, INC.
  3. Read the temporary code using the Subaru Select Monitor or general scan tool. Refer to COMMON (DIAG)>DIAGNOSTIC TROUBLE CODE (DTC) .
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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.