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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