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Home >> Chevrolet >> 1986 >> Cavalier CS, 2D Hatchback, 2.8 W, Standard >> Repair and Diagnosis (Single Page) >> Engine Performance >> Testing & Diagnosis >> Fuel Injection System - PFI >> Diagnostic Testing >> Trouble Code Definitions >> Code 42

Code 42

Open or short to ground in the Electronic Spark Timing system or by-pass circuits.

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