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Toyota
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1995
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Celica ST, 2D Coupe, Automatic
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Repair and Diagnosis
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Engine Performance
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System
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Engine Controls - Tests W/Codes - 1.8L
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Diagnostic Testing
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Code 52 - Knock Sensor Circuit
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Possible causes are:
Possible causes are:
Open or short in knock sensor circuit.
Knock sensor (loose).
ECM.