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Home >> Subaru >> 2018 >> WRX STI >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (Diagnostics) (2 Of 4) (STI) >> Diagnostic Procedure with Diagnostic Trouble Code (DTC) >> DTC P0301: Cylinder 1 Misfire Detected >> Execution Condition
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Execution Condition

Secondary parameters Execution condition
Battery voltage ≥ 8V
Throttle position change during 16 milliseconds < 14°
Fuel shut-off function ? Fuel cut
Engine speed ≥ 550rpm
to
≥ 6700rpm
Intake manifold pressure > Value of Map 1
Elapsed time after starting the engine ≥ 2 crankshaft revolutions
Following condition A or B is met
A: Engine coolant temperature at engine starting > -7°C (19.4°F)
B: Following conditions (b1) and (b2) are met
(b1) Engine coolant temperature at engine starting ≥ -7°C (19.4°F)
 
(b2) Engine coolant temperature ≥ 21°C (69.8°F)

Map 1