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Home >> Subaru >> 2018 >> WRX Base >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System (Diagnostics) (2 Of 4) (Except For STI) >> Diagnostic Procedure with Diagnostic Trouble Code (DTC) >> DTC P0301: Cylinder 1 Misfire Detected >> Diagnostic Method >> 180° Interval Difference Method

180° Interval Difference Method

Diagnostic value 180 degree interval difference = (A - B) - (B - C)
Judge as a misfire in the following cases.
  • 180 degree interval difference = Judgment value of positive side
  • 180 degree interval difference = Judgment value of negative side

    (Diagnostic value before 180° CA)

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