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Home >> Geo >> 1990 >> Prizm Base, 4D Hatchback, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes >> Diagnostic Circuit Check >> Code 52, Knock Sensor Signal Open Or Shorted Circuit VIN 5) >> Diagnostic Aids

Diagnostic Aids

If code is intermittent, see TESTS W/O CODES article.

Fig 1: Code 52 Circuit Diagram

G90E15812

Fig 2: Code 52 Flow Chart

G90F15813

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