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Home >> Porsche >> 1994 >> 911 Turbo >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes >> Fault Code Diagnosis & Testing >> Code 1131: Knock Sensor No. 1
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Code 1131: Knock Sensor No. 1

Check knock sensor and bracket for proper installation. Check sensor connectors for loose, corroded or damaged terminals. Check knock sensor circuits/wiring harness (Brown and White wires back to DME control unit). If necessary, replace knock sensor.

NOTE: If knock sensor is faulty, ignition timing will be retarded 6 degrees on crankshaft.
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