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Home >> Subaru >> 2018 >> Impreza Base, 4D Sedan, Standard Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 5 (Engine Control System (Diagnostics - Introduction)) >> Inspection Mode >> Procedure >> Inspection Mode B
July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

Inspection Mode B

WARNING: This page is about a different car, the 2018 Subaru Crosstrek. However, it is still accessible from the selected car via links, so may be relevant.
DTC Item Condition Number of driving cycles on the detecting condition
P0087 FUEL RAIL/SYSTEM PRESSURE - TOO LOW BANK 1 Complete diagnosis with inspection mode A as well. 1
P0088 FUEL RAIL/SYSTEM PRESSURE - TOO HIGH BANK 1 Complete diagnosis with inspection mode A as well. 1
P0125 INSUFFICIENT COOLANT TEMPERATURE FOR CLOSED LOOP FUEL CONTROL [Engine Coolant Temperature] at engine starting: Less than -15°C (5°F) 2
P0134 A/F/O2 SENSOR CIRCUIT NO ACTIVITY DETECTED BANK 1 SENSOR 1 - 1
P0137 O2 SENSOR CIRCUIT LOW VOLTAGE BANK 1 SENSOR 2 - 2
P0138 O2 SENSOR CIRCUIT HIGH VOLTAGE BANK 1 SENSOR 2 - 2
P0171 SYSTEM TOO LEAN BANK 1 Complete diagnosis with inspection mode A as well. 2
P0172 SYSTEM TOO RICH BANK 1 Complete diagnosis with inspection mode A as well. 2
P0300 RANDOM/MULTIPLE CYLINDER MISFIRE DETECTED Complete diagnosis with inspection mode A as well. 2
P0301 CYLINDER 1 MISFIRE DETECTED Complete diagnosis with inspection mode A as well. 2
P0302 CYLINDER 2 MISFIRE DETECTED Complete diagnosis with inspection mode A as well. 2
P0303 CYLINDER 3 MISFIRE DETECTED Complete diagnosis with inspection mode A as well. 2
P0304 CYLINDER 4 MISFIRE DETECTED Complete diagnosis with inspection mode A as well. 2
P0500 VEHICLE SPEED SENSOR "A" CIRCUIT - 1
P0506 IDLE CONTROL SYSTEM RPM - LOWER THAN EXPECTED - 2
P0507 IDLE CONTROL SYSTEM RPM - HIGHER THAN EXPECTED - 2
P059A Active Grille Air Shutter "A" Position Sensor Circuit [Ambient 1
P059F Active Grille Air Shutter "A" Performance/Stuck Off Temperature]: 3 2
P05A0 Active Grille Air Shutter "A" Stuck On - 33°C (37.4 - 91.4°F) 2
P05A1 Active Grille Air Shutter "A" Position Sensor
Minimum/Maximum Stop Performance
  2
P05A2 Active Grille Air Shutter "A" Control Circuit/Open   1
P05A6 Active Grille Air Shutter "A" Supply Voltage
Circuit/Open
  1
P05C0 Active Grille Air Shutter Module "A" Over Temperature   1
P062D FUEL INJECTOR DRIVER CIRCUIT PERFORMANCE BANK 1 - 1
P0851 PARK/NEUTRAL SWITCH INPUT CIRCUIT LOW CVT model 2
P0852 PARK/NEUTRAL SWITCH INPUT CIRCUIT HIGH CVT model 2
P1261 CYLINDER 1 DIRECT FUEL INJECTOR CIRCUIT/OPEN - 1
P1262 CYLINDER 2 DIRECT FUEL INJECTOR CIRCUIT/OPEN - 1
P1263 CYLINDER 3 DIRECT FUEL INJECTOR CIRCUIT/OPEN - 1
P1264 CYLINDER 4 DIRECT FUEL INJECTOR CIRCUIT/OPEN - 1
P162A STARTER INTERLOCK INTERNAL CIRCUIT - 1
P2096 POST CATALYST FUEL TRIM SYSTEM TOO LEAN BANK 1 Complete diagnosis with inspection mode A as well. 2
P2097 POST CATALYST FUEL TRIM SYSTEM TOO RICH BANK 1 Complete diagnosis with inspection mode A as well. 2
WARNING: When performing inspection mode B on a public road, pay sufficient attention to the traffic condition and give the highest priority to safe driving.

Diagnostic procedure: 

  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, clear the memory of [Engine Control System]. Ref. to COMMON (diag)>CLEAR MEMORY .
  3. Execute the inspection mode. Ref. to ENGINE (DIAGNOSTICS) (H4DO)>INSPECTION MODE .
    NOTE: Perform the inspection mode after warming up the engine except when the engine coolant temperature at engine start is specified.
  4. Drive at 10 km/h (6 MPH) or more.
  5. Stop the vehicle and idle for ten minutes.
  6. Read the readiness code of [Engine Control System] using Subaru Select Monitor and check that the concerned DTC is completed. Ref. to ENGINE (DIAGNOSTICS) (H4DO)>ALL READINESS DIAGNOSTIC CODE (S) .
  7. Read the DTC of [Engine Control System] using the Subaru Select Monitor. Ref. to ENGINE (DIAGNOSTICS) (H4DO)>DIAGNOSTIC TROUBLE CODE (DTC) .
  8. Read the temporary code using the Subaru Select Monitor or general scan tool. Ref. to COMMON (diag)>DIAGNOSTIC TROUBLE CODE (DTC) .