DTC 52 - Knock Sensor Signal (1.8L)

DTC 52 is set when ECM detects an open or short in the knock sensor circuit with engine speed between 1200-6000 RPM. Check for open or short in knock sensor circuit, a loose or faulty knock sensor of faulty ECM.

Fig 1: DTC 52 - Schematic

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Fig 2: DTC 52 - Detection Driving Pattern

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Fig 3: DTC 52 - Inspection Using Oscilloscope

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Fig 4: DTC 52 - Diagnostic Flowchart (1 Of 2)

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Fig 5: DTC 52 - Diagnostic Flowchart (2 Of 2)

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