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Home >> Subaru >> 2017 >> Forester 2.0XT Touring >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> Engine Control System (Diagnostics) (P0171 To P0685) (H4DOTC) >> Diagnostic Procedure with Diagnostic Trouble Code (DTC) >> DTC P0301 Cylinder 1 Misfire Detected >> Execution Condition

Execution Condition

Secondary Parameters Execution condition
Battery voltage ≥ 8 V
Fuel shutoff function Fuel cut
Engine speed 400 RPM - 6000 RPM
Intake manifold pressure
  • Normal ignition 19.1 kPa - 47 kPa (Changes based on the engine speed and atmospheric pressure.)
  • Idling ignition 19.3 kPa - 46.2 kPa (Changes based on the engine speed and atmospheric pressure.)
Time elapsed after engine start ≥ 2 crankshaft revolutions
Following condition A or B is met
A: Engine coolant temperature at engine starting
> 7° (19°F)
B: Following conditions (b1) and (b2) are met ≤ 7° (19°F)
(b1) Engine coolant temperature at engine starting
(b2) Engine coolant temperature
≥ 21° (70°F)