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Home >> Chevrolet >> 2004 >> Optra LS, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - 1.8L (L79) - DTC P0106 To DTC P0300 >> DTC P0300 >> Conditions for Setting the DTC

Conditions for Setting the DTC

The ECM detects a crankshaft rotation speed variation indicating a misfire sufficient to cause emission levels to exceed a predetermined value.