Mike's Workshop Manuals
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Chevrolet
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2004
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Optra Base, Standard
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Repair and Diagnosis
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Engine Performance
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System
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Engine Controls - 1.6L (L91) - DTC P0336 To DTC P1402
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DTC P1321
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Conditions for Setting the DTC
Conditions for Setting the DTC
The ECM detects more or less than 58 reference pulses for 10 crankshaft revolutions.