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Home >> Subaru >> 2019 >> Ascent Base >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System (Diagnostics - Introduction) >> Inspection Mode >> Procedure >> Inspection Mode B
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Inspection Mode B

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
P0130 A/F/O2 SENSOR CIRCUIT 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
P0140 O2 SENSOR CIRCUIT NO ACTIVITY DETECTED 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
P062D FUEL INJECTOR DRIVER CIRCUIT PERFORMANCE BANK 1 - 1
P0700 TRANSMISSION CONTROL SYSTEM (MIL REQUEST) - 1
P0851 PARK/NEUTRAL SWITCH INPUT CIRCUIT LOW - 2
P0852 PARK/NEUTRAL SWITCH INPUT CIRCUIT HIGH - 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.
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, clear the memory of [Engine Control System]. Ref. to COMMON (DIAG)>CLEAR MEMORY .
  3. Drive at 10 km/h (6 MPH) or more.
  4. Stop the vehicle and idle for ten minutes.
  5. Read the readiness code of [Engine Control System] using Subaru Select Monitor and check that the concerned self-diagnosis is completed. Ref. to ENGINE (DIAGNOSTICS) (H4DOTC)>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) .